I'm on Qlaira contraceptive pill for contraceptive use and to ease my period pains. My boyfriend and I use condoms often but not always, but we use the withdrawal method every time we have unprotected sex and the condoms haven't broken. I take my pills at roughly the same time everyday, sometimes I take it late though, like 3 hours late. I'm supposed to have my period for 3 or 4 days now but I haven't had anything, not even spotting. I've been on qlaira for a few months now but not more than 6 months I suppose. What could be the problem? Is there a chance the egg was fertilized?