Hi! 8's been almost 2 months now when i started taking pill to avoid pregnancy. My monthly period came last january 3, so was end up january 8..On that day,it was my 2nd pill of my new blister of pills..when I reached at the 18th day..I stopped taking it because I want now to get pregnant...I missed 4 tablets up to now. Why is it my menstruation came this night & it's to early at this moment? Do I have a chance to get pregnant?