I am on the pill and I have unprotected sex with my boyfriend on a regular basis. I missed one pill about 2 weeks ago and I took it about 24 hours later. I always start my period on the same day of every month and usually I dont have bad cramps at all. My period usually last 4-5 days. On Tuesday night I spotted a little and then some Wed morning then it stopped. I have been having cramps since Monday and I feel bloated. I took a pregnancy test at home and it was negative. I have never had this happen before could I be pregnant?