Ashey,
If you had unprotected sex, then there is a possibility that you could be pregnant. If you had sex more than two weeks ago and you have already missed your expected period most home tests should be able to detect if you are pregnant. I would take a test to find out. If the test is negative and you still haven’t started in a couple of weeks I would take the test again and/or see your doctor to determine if you are pregnant or if there is another reason your cycle is off. Have you talked to your boyfriend and told him you think you might be pregnant? Do you think he will be supportive you and his child if you are pregnant?