Will breakthrough bleeding caused by birth control take the place of, or alter my period?

Breakthrough bleed: Breakthrough bleeding (bleeding at the wrong time) is very normal on birth control. It happens in about 1/3 of users. Its no big deal and usually self corrects over time. If you are not satisfied or it continues to happen then consider using a different birth control method. It is a common side effect and does not mean something is wrong or that the pill is not working.

MaYbe: Most women who take birth control pills have no side effects, but the most common side effect in the first 1-3 months is irregular bleeding that gets better over time. Missed pills can also cause breakthrough bleeding. Extending the cycle increases risk of btb. Otc meds such as Ibuprofen or Naproxen can help breakthrough bleeding. After btb, most periods then come on time during placebo pills.