Conversation: The conversation between human and AI assistant.
[|Human|] Is it normal for a girl to miss her period when on birth control ? my girlfriend jus started take birth control for the first time and they finished on satuday and the is the week she should get her period, but today makes 4 days now and she still havent got her period. Since she been on them we had sex only once and we used a condom.
[|AI|]  Hi, Thanks for query.  Yes it is normal in disturbances in menstrual cycle when she is on birth control measure because they are having estrogen and progesterone hormones and causing menstrual disturbances.  Delay in period for 4 day not a worry, wait for at least 10 days,than go for pregnancy test, and consult a gone.  Chances of pregnancy in your case is nil because she is on pills, and you are using condom.  So don't worry.  Take care.