Normally, without the pill I have a 24 day cycle. My last period ended on July 3rd. I was not on the pill at the time. I had unprotected sex July 4,5,6,7. He did pull out. I then started trisprintec again on the 6th. I had unprotected sex July 25,26,27,28. Again pulled out. I am now on my last white pill and have still not gotten my period. I had previously been on trisprintec and have never missed one on it. If I take a pregnancy test and it's negative do I start my next pack of pills? Or is there still a possibility of pregnancy? Help!