how long are you supposed to be on your period while on birth control
Confidence votes 158. While on birth control, your periods should last just as long as when you're not on birth control. Some women regularly experience 2-3 day periods while other women can regularly experience 6-8 day periods.t the end of the cycle, yes, you have a period, then you start the next cycle of pills. More r â¦ ecently, doctors have begun prescribing birth-control pill cycles which completely suppress a woman's period. There is some controversy about whether this is healthy or will have negative health effects in the long term.