i had intercourse with my partner on Saturday night the 5th and took the plan b pill Monday around noon which was the 7th. I believe and it was supposed to get my period by August 14 and it's now August 17. All I have been doing lately is eating and sleeping . after every meal I feel nauseous and i wanna believe I still have side effect of the Plan B. but I am not sure if this is normal or not and i don't wanna be dramatic and go to the doctors for no reason.