So over the past 2 months or so, me and my boyfriend have been having sex without the use of a condom. I take birth control pills but am not always regular and forget a couple of days sometimes. The first time we had sex it was only my 6th or 7th day on the pill and it just kinda keeps happening. I had a short time of bleeding but did not know whether it was my period or not. It only lasted 4 days compared to my usual 7 and also came a week early. I took a test but it came out negative. We've had sex since then. I get stomach pains sometimes and have been feeling nausea especially when eating, I also have been peing more frequently. Yesterday I wiped and saw a small pink blood spot. I have not had anymore bleeding. I am due for my period In 3 days. Could I be pregnant?