I took plan B on Sunday morning, within 12 hours after unprotected sex. I do believe that it was in my "dangerous" time - ovulating (give or take a couple of days). The day I took it I slept most of the day as I was sooooooooooo tired. The next day I was still pretty tired and just not myself... both symptoms I attributed to plan B.
Now we're Thursday and for the last 2-3 days I have been having period like cramps... Even back ache (just like when I am getting ready to have my period). I spotted brown a tiny bit on Monday and Tuesday... I have been pregnant before (have two kids) and I had these symptoms when I was pregnant with them, but only after my periods were due (or around that time)... not days after conception.
I was wondering if it was normal that I would start feeling crampy a couple of days after plan B. Everything I read says that all side effect should be gone within 2 days... so I don't know