Why Has My Period Changed?

Birth control pills use hormones to regulate ovulation and switching brands or types may affect your menstrual cycle.

Did My New Brand of Birth Control Pill Change My Period?

After using one birth control type or brand for a while your body adjusts to the hormones and you establish a more regular menstrual cycle.
When changing to a new birth control pill, or even from a generic to name brand or vice versa, your menstrual cycle may readjust. There is a good chance your period could be delayed or come sooner than expected. Some women even experience cessation of the menstruation for one or two cycles while her body adjusts.

Here are some changes you can expect when switching from one type of pill to another:

• Delayed periods
• Absent periods
• Heavier periods
• Lighter periods
• Longer periods
• Shorter periods
• Spotting in between periods