Hi May-
Thanks for contacting us for some help! It sounds like you are really worried and I can understand how you are feeling. Anytime a man’s penis goes inside of you, they have what is called “pre-cum” that can come out of them and the sperm can travel to your ovaries to meet up with one of your eggs. If you believe you are at least 5 days past when your period should have happened, then you can take a pregnancy test to make sure. If you go to http://www.optionline.org and type in your city name, a list of centers will come up that are near you. You can get a FREE and CONFIDENTIAL pregnancy test at the centers. They are super nice there and can help you with any questions you might have. I am also here if you need anything else. It sounds like you might need to wait until the end of this week to see if you really have missed your period. Then you can take a test and have more accurate results.
Please let me know how things go and if I can help with anything else!
Luv- Molly