pregnant???

So I was about to get on my period, it was literally the night before my period began, i had already started getting that discharge you get before your period. And i had sex. Unprotected sex. He pulled out, but I still felt some inside me. If that makes sense. (Maybe I'm just paranoid) 
Okay well, after that night, I didn't get my period. At all. I'm supposed to get my period around the 5th-7th of the month and it is now October 24th and I have not gotten anything this month. Please help.