On the 21st of may i took a plan b pill due to unprotected sex... that same night condom slipped... wasn't sure how long plan b takes action so i didn't take another one.. about a week ago i was having nausea... i never get sore breasts before my period... i was suppose to get my period yesterday.. june 4th. I have tender breasts, milky white discharge... light cramps come and go but no period..... and i took pregnancy test on 31st; negative... too early???