okay, im on birth control pills but i took my last active pill on saturday and sunday, the next day i had sex for the first time and we didnt use a condom cuz im on birth control.im not sure if it "went in all the way" but i wasnt bleeding. its now tuesday and i havent started on my period because im supposed to start while im on my inactive pills right? did i really have sexso could it be that im pregnant or is it too soon to tell?