I had my period on January 12th. It is exactly 2 weeks late today. I had sex 4 days after my period ended in January and we did use a condom each of the 4 times. We did not use the condom the entire time we were having sex though. He put it on when he was about to ejaculate so that the condom would catch it. I know about precum but now my period is 2 weeks late and I do not use any form of birth control except the condom. My period is sometimes irregular and up to a week late or early. But never has it been 2 weeks late. I have taken 4 pregnancy tests and they all tested negative. Could I be pregnant?

Yes of course, as you noted you "KNOW" about precum so why is this a surprise, there are plenty of sperm in the early fluids to do the job.

So now it is a waiting game.

Well yeah I mean I do "KNOW" that I could be pregnant. Its not that I'm naeive just that I guess I should have put it as how likely would it be.. I do have a roommate that just now started hers. Maybe mine and hers are just getting in sync. I have heard that they do that.