I think I'm pregnant

Is your period late? If so, try a pregnancy test using first morning urine. If the test is negative wait a week or two and test again if you still don't get your period. If that test is also negative than wait until your next period is due, test if you miss it, or see a doctor for a more accurate blood test.

There is absolutely no way to diagnose pregnancy online. The only thing we can tell you is that pregnancy is possible any time you have sex, so yes, you could be pregnant.