If you thought there was even the very slightest chance you could be pregnant, if you were anywhere near fresh sperm, even if the timing doesn't seem quite right, I'd recommend getting a home test before doing anything else.That said....it's possible your period is just late and is starting soon and that is why you feel like you do. If you've always been regular it would be a good idea to call your dr and check with them. There are things besides pregnancy that can cause menstrual disruptions. I think the guideline is two months without a period needs checked, but I could be wrong, plus your doc might have other ideas based on your history and symptoms.