{"id":84896,"date":"2012-04-27T19:41:44","date_gmt":"2012-04-28T01:41:44","guid":{"rendered":"https:\/\/americanpregnancy.org\/uncategorized\/13-weeks-pregnant\/"},"modified":"2026-05-26T01:43:13","modified_gmt":"2026-05-26T07:43:13","slug":"13-weeks-pregnant","status":"publish","type":"post","link":"https:\/\/americanpregnancy.org\/es\/pregnancy\/13-weeks-pregnant\/","title":{"rendered":"13 semanas de embarazo"},"content":{"rendered":"<p>\u00a1Enhorabuena! La decimotercera semana de embarazo significa que le queda una semana en su <a href=\"https:\/\/americanpregnancy.org\/while-pregnant\/first-trimester\/\">primer trimestre<\/a>. Esto es lo que puede esperar en la pr\u00f3xima semana.   Obtenga la aplicaci\u00f3n Fetal Life para <a href=\"https:\/\/apps.apple.com\/us\/app\/myfetallife\/id1418310499\">Apple<\/a> y <a href=\"https:\/\/play.google.com\/store\/apps\/details?id=myFetalLifeApp.myFetalLifeApp\">Android<\/a> avalada por la American Pregnancy Association.<\/p>\n<h3>\u00bfQu\u00e9 cambios est\u00e1n ocurriendo en su cuerpo durante la decimotercera semana de embarazo?<\/h3>\n<p>Es posible que a\u00fan no haya empezado a usar ropa de maternidad, pero lo m\u00e1s probable es que haya reemplazado la ropa ajustada por prendas m\u00e1s c\u00f3modas. Pueden estar apareciendo <a title=\"\u00bfSon diferentes las estr\u00edas del embarazo?\" href=\"https:\/\/americanpregnancy.org\/postpartum\/prevent-pregnancy-stretchmarks\/\">estr\u00edas<\/a> en su abdomen, pechos, caderas o gl\u00fateos. Sus <a title=\"Malestar matutino\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/morning-sickness-during-pregnancy\/\">n\u00e1useas matutinas<\/a> pueden empezar a disminuir en este momento, pero es posible que experimente <a title=\"Embarazo y acidez\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/heartburn-during-pregnancy\/\">acidez estomacal<\/a> con mayor frecuencia. Tambi\u00e9n puede notar algunos <a title=\"Cambios en los senos durante el embarazo\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/breast-changes-during-pregnancy\/\">cambios distintivos en sus pechos<\/a>. A estas alturas, sus pechos pueden haberse agrandado y sentirse abultados o nodulares, lo cual es causado por los conductos mamarios a medida que comienzan a prepararse para la producci\u00f3n de leche. Tambi\u00e9n puede haber notado venas que aparecen justo debajo de la piel de sus pechos. Adem\u00e1s, el calostro comienza a formarse durante el segundo trimestre; esta es la primera etapa de la <a title=\"\u00bfQu\u00e9 contiene la leche materna?\" href=\"https:\/\/americanpregnancy.org\/es\/postpartum-es\/whats-in-breastmilk\/\">leche materna<\/a>, y puede expulsarse del pez\u00f3n cuando se masajea.      <\/p>\n<h3>\u00bfQu\u00e9 est\u00e1 sucediendo con su beb\u00e9 durante la decimotercera semana de embarazo?<\/h3>\n<p>Hasta este momento, la cabeza de su beb\u00e9 ha sido la parte m\u00e1s grande de su cuerpo, pero eso est\u00e1 empezando a cambiar. La cabeza de su beb\u00e9 ahora es solo aproximadamente 1\/3 de su cuerpo. Las huellas dactilares \u00fanicas ya se encuentran en las puntas de los dedos de su beb\u00e9. El ri\u00f1\u00f3n y el tracto urinario son completamente funcionales, lo que permite que el l\u00edquido amni\u00f3tico que su beb\u00e9 ha estado tragando sea excretado. Adem\u00e1s, cubriendo la piel de su beb\u00e9 hay un vello fino y suave llamado <em>lanugo<\/em>.    <\/p>\n<h3>\u00bfQu\u00e9 tama\u00f1o tiene su beb\u00e9 durante la decimotercera semana de embarazo?<\/h3>\n<p>En su decimotercera semana de embarazo, su beb\u00e9 mide casi <strong>9,5 cent\u00edmetros de largo<\/strong> y <strong>pesa unos 35 gramos<\/strong>.<\/p>\n<h3>\u00bfQu\u00e9 debe planificar para la decimotercera semana de embarazo?<\/h3>\n<p>A medida que las mujeres terminan el primer trimestre, pueden notar un aumento de la libido. Es com\u00fan que las parejas se pregunten si <a title=\"Sexo y embarazo\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/sex-and-pregnancy\/\">el sexo durante el embarazo<\/a> es seguro. Muchas no se dan cuenta de que el beb\u00e9 est\u00e1 protegido por el l\u00edquido amni\u00f3tico en el \u00fatero, por su abdomen y por el <a title=\"Tap\u00f3n mucoso: Expulsi\u00f3n del tap\u00f3n\" href=\"https:\/\/americanpregnancy.org\/es\/giving-birth\/mucus-plug\/\">tap\u00f3n mucoso<\/a> que sella su cuello uterino y ayuda a proteger contra infecciones. Para muchas parejas, es seguro mantener relaciones sexuales durante el embarazo.    <strong>Sin embargo, debe evitarse el sexo si:<\/strong><\/p>\n<ul>\n<li>Tiene antecedentes de parto prematuro o <a title=\"Parto\" href=\"https:\/\/americanpregnancy.org\/labor-and-birth\/\">trabajo de parto<\/a>.<\/li>\n<li>Tiene antecedentes de <a title=\"Aborto espont\u00e1neo\" href=\"https:\/\/americanpregnancy.org\/pregnancy-complications\/miscarriage\/\">aborto espont\u00e1neo<\/a>.<\/li>\n<li>Ha roto aguas.<\/li>\n<li>Experimenta <a title=\"Sangrado durante el embarazo\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/bleeding-during-pregnancy\/\">sangrado vaginal<\/a> o <a title=\"Flujo vaginal durante el embarazo\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/vaginal-discharge-during-pregnancy\/\">flujo<\/a> inexplicables.<\/li>\n<li>Tiene <a title=\"Placenta previa\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/placenta-previa\/\">placenta previa<\/a> o una placenta de inserci\u00f3n muy baja.<\/li>\n<li>Tiene un <a title=\"Cuello uterino incompetente: Cuello uterino debilitado\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/incompetent-cervix\/\">cuello uterino incompetente<\/a>, o su cuello uterino se ha dilatado.<\/li>\n<li>Usted o su pareja tienen una <a title=\"Infecciones de transmisi\u00f3n sexual (ETS e ITS) durante el embarazo\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/stds-and-pregnancy\/\">enfermedad de transmisi\u00f3n sexual<\/a>.<\/li>\n<\/ul>\n<h3>Consejos para mejorar su embarazo<\/h3>\n<p><strong>Casi el 90% de las mujeres embarazadas<\/strong> experimentan estr\u00edas. Las estr\u00edas aparecen como rayas rosadas o rojizas que recorren su abdomen y\/o pechos. Aumentar de peso a un ritmo m\u00e1s lento puede disminuir la probabilidad de que aparezcan estr\u00edas, y tambi\u00e9n es m\u00e1s saludable para usted y su beb\u00e9 por nacer. <a title=\"Ejercicio y embarazo\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/exercise-and-pregnancy\/\">Hacer ejercicio<\/a> y aplicar lociones que contengan vitamina E y alfahidroxi\u00e1cidos tambi\u00e9n pueden ayudar a <a title=\"\u00bfQu\u00e9 se puede hacer para prevenir las estr\u00edas?\" href=\"https:\/\/americanpregnancy.org\/es\/postpartum-es\/prevent-pregnancy-stretchmarks\/\">prevenir las estr\u00edas<\/a>. Si estos m\u00e9todos no le funcionan, consu\u00e9lese sabiendo que las estr\u00edas se desvanecen despu\u00e9s del parto. Consulte con su profesional sanitario antes de usar productos de venta libre para tratar las estr\u00edas. Algunas de estas cremas pueden ser absorbidas por la piel y pasar al torrente sangu\u00edneo de la madre, lo que significa que tambi\u00e9n pasar\u00e1n al beb\u00e9.     <\/p>\n<h3>Consejos para la pareja de la madre<\/h3>\n<p>Llene el dep\u00f3sito de gasolina del coche de mam\u00e1. Esto puede sonar bastante simple, pero muchas mujeres embarazadas son sensibles a los vapores de gasolina. Incluso si su pareja no es una de ellas, probablemente apreciar\u00e1 su ayuda.<br \/>\n<!--more--><\/p>\n<h4>\u00bfDesea saber m\u00e1s?<\/h4>\n<ul>\n<li><strong><a href=\"https:\/\/americanpregnancy.org\/pregnancy-health\/pregnancy-nutrition\/\">Nutrici\u00f3n durante el embarazo<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/americanpregnancy.org\/pregnancy-health\/exercise-during-pregnancy\/\">Ejercicio durante el embarazo<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/americanpregnancy.org\/about\/safe-catch\/\">At\u00fan Safe Catch <\/a><\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u00a1Enhorabuena! La decimotercera semana de embarazo significa que le queda una semana en su primer trimestre. Esto es lo que puede esperar en la pr\u00f3xima semana. Obtenga la aplicaci\u00f3n Fetal Life para Apple y Android avalada por la American Pregnancy Association. \u00bfQu\u00e9 cambios est\u00e1n ocurriendo en su cuerpo durante la decimotercera semana de embarazo? Es [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":84897,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7629,7647],"tags":[],"faq-categories":[8401],"class_list":["post-84896","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pregnancy","category-week-by-week","faq-categories-no-faq"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.6 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>13 semanas de embarazo | American Pregnancy Association<\/title>\n<meta name=\"description\" content=\"Durante la decimotercera semana de embarazo est\u00e1 completando el primer trimestre. 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