Hi, Welcome to HCM, Thanks for posting your query to this forum, You have started taking Oral contraceptive pill, yes you must understand they do not provide protection immediately as they work by suppressing ovulation hence when you start the tablet usually on your first day of period bleeding or on first sunday after your period starts, then continue tablets regularly without fault and if you forget take it as soon as possible. Initially and if you miss your pill then use barrier method(Condom) for contraception otherwise pregnancy can occur. In your case you have just started the tablet so take pregnancy test after 10 days of ovulation or take Beta HCG test to rule out pregnancy and consult Gynecologist . Please take care. Good Luck. Dr.Akhilesh Dubey M.D.