Just began taking birth control. i was warned that i might have breakthrough bleeding during the first month. does this occur to most during 1st month?

First 3 months...: Breakthrough bleeding is an annoying possible side-effect of taking birth-control pills. It is most common in the first 3 months after you start taking a new pill. When you bleed and how much his highly variable between individuals. You should try to stick with a new pill for at least 3 months to see if the bleeding resolves. If it lasts longer than 3 months, you may need a different pill.