on monday my period ended and i was with my boy friend we had unprotected sex and because i was scared i took the emergency contraceptive. this happened on wednesday again.yesterday night we were both tipsy and i had unprotected sex again and this morning i was so confused because i wasn't sure if i should take another of the pills but i don't want to get pregnant so i took another. i just want you to know if this is very wrong, or if i can develope tolerance to the drug.