If you forget three of more pills in a row Begin using a backup method. On Sunday, begin a new pack. Use your backup method of birth control for one week. Save the remaining pills from the old pack in case you lose any in the future. The common side effects of birth control pills are relatively minor symptoms that may be annoying but are not dangerous.
Most women experience side effects from birth control pills during the first three months of use.
After that, the side effects usually decrease. One exception is weight gain, which often lasts as long as the Pill is used. Most women are not bothered by side effects enough that they stop using the Pill. The form of progestin. The amount of estrogen or progestin.