Here's the story: A guy and I had s ex without a c ondom tonight. I am on the pill but there has been twice in the last couple weeks that I have taken it 8-9 hours later than I should because I forgot. Also I don't take it at the exact same time everyday. Maybe about an hour or two difference. I am currently on the sugar pill part so I should be starting my period soon. He also pulled out before he came inside of me. What are the chances of me being pregnant? Should I be worried? Would it be a good idea to go buy plan b in the morning?