Okay i got a question about ?

I dont want your smart remarks either!!! okay me and this guy had last wednsday;;; And well i heard that a guy can leak and not know it;; and that it can get you pregnant;; Well im on birth control;; and i have like 4 pills left;; and im really scared that im not goin to start my period;; and he thinks im startin sh** and im not;; but can you get pregnant if he leaks in you; Please help