I missed 3 pills of the 3rd week last month(i take Tri Sprintec) Was sexually active on the day I noticed I missed the 3 pills. I took them the same night, on the 10/31 I had a brownish discharge, the next day I had light pink spotting, this continued for the rest of the week( my periods are always heavy, and I get cramps) I had no cramps at all. My very light period ended on Monday 11/07. But ever since Monday I have been feeling nauceous around the same time, about 2 or 3 hours after lunch. I have been going to bed at a good time, but feel a little sleepier than usual after work. I took a home pregnancy test twice, one 2 consecutive days. Both came out negative. Is it possible that i'm pregnant?