If you take, or have taken, hormone-containing birth control pills, then you probably already know they can cause some pretty wacky side effects. In the first few months of taking a new birth control pill, your body may react with any number of side effects from cramps or breast tenderness to more serious migraines or breakthrough bleeding. However, most women have no side effects.
Here are the most common and widely reported side effects of taking birth control pills…
Embarrassing and unpredictable spotting, or breakthrough bleeding as doctors call it, is most common when taking progestin-only or low-estrogen pills. It occurs when the lining of the uterus becomes thin and sloughs off a little bit in the middle of your pill cycle.