Okay so about 1 month in a half ago i cheated on my girlfriend and had sex with this guy. Well about two weeks later i started trying drugs like, coke, x, and these small packs called powder packs. They are filled with over 5 different drugs as in anti- depressents, and x and coke. well over the weekend i tried a new powder pack that didnt let me sleep for almost 3 days, but i havent started my period yet. My girlfriend thinks im pregnant she wants me to go get tested. I dont feel any symptoms. What should i do? I dont want to go to the doctor but we really have to figure this out soon. =(