... me, but I took Plan B because I was scared that his fluid (not semen) have contained sperms. I took Plan B within 12 hours after intercourse. At first I didn't have any side effect symptoms until now (almost 2 weeks). I haven't got my period yet, I'm having breast tenderness, brown spotting in only a day, abdominal pain lead to extreme nauseous. Are these the signs I'm pregnant?