On July 27, me and my now ex boyfriend had sex and we were being dumb and the condom broke... Well. I missed my period that month. I started to freak out and take a ton of pregnancy tests. I took about 7 and out of all of those 1 was positive. But since then I've dropped the idea of me being pregnant, only to have that thought being brought back to me almost 4 months later. A few weeks ago I started thinking I was pregnant again because I was getting unusual cramping in my abdomen and I started gaining weight and getting what I think is a baby bump. My mom brought me to the doctor to have me tested and get an ultrasound. They did the ultrasound thing first and said they thought they saw something, but couldn't tell for sure because my bladder wasn't full. They tested my blood and it came back negative. And now, a few weeks later, I am dead set on my being pregnant. I have symptoms, those of which being: cramping/stretching feeling in my abdomen, daily mild headaches, bloating feeling in my stomach, shortness of breath, lower backaches, fatigue, tender breasts, I have thrown up a few time in the last month, and I've gained about 10 pounds(I have never weighed more than 120 in my life, before I left my moms house I weighed 118, and now I weigh almost 128). I don't know what to think, and even my friends are asking if I'm pregnant because of my belly showing. My boyfriend even mentioned me looking like I've gained some weight. Please help?