I had a period on December 10th. I had sex on Dec. 27th or the 28th. I had a period again on Jan. 9th. I still had cramps, but I didn't have any clotting this time and it wasn't as heavy, it was about 3 days and the medium flow only lasted 1 day. 2 days after AF I had brown discharge just one time. I didn't think about being pregnant, because I'm not trying, but I started to wonder when my period was different and I've had back aches, headaches, nausea, change in bowel movement, frequent urination. I've taken several test and they have all been negative, but I still feel weird. If I calculated somewhat correctly I was ovulating around the time of sex, but I'm just unsure because I never track when I ovulate. I was just wondering if I had sex 2 weeks before my period would I still have Jan. period and Jen miss Feb. period and then get a positive ? I could just be freaking out, but playing the waiting game is hard.