I been having unprotected sex with my boyfriend and for 3 days i have been feeling nauseous and i have been vomiting. Today i took a large amount of benadryl and was rushed to the hospital. I got sent home but i seen nowhere if i had a pregnancy test. When i got home i started having really bad crampsand spotting. It is around the time when i do get my period but i have never felt pain like this before.