How could I possibly be pregnant?

By your last question you had posted on this site, I’m going to assume you’re in your mid-teens. The big main question is have you been having unprotected sex? If you have, then you may want to go check. You shouldn’t deny it, just take a test so you’re 100% sure. If not, you’re still young. Your body isn’t fully…complete in its assembly process. It’s still going through changes and it just may not have settled into a stable pattern, yet. Have you skipped periods in the past?

You might just be irregular. I do that, too. I skip months, sometimes. Now that I think of it… I haven’t had mine since December. <.< (haha, watch. I’ll end up getting mine tomorrow or something. -.-)

But I’m 100% sure that I’m not pregnant, because I haven’t had sex.

Well, have you had sex? Even if it was protected, something might’ve happened. If you have, take a test. You never now. Take several, actually. If you test positive, then definitely go see the doctor.

are you taking birth control? if so this could cause your periods to change or you could be lacking in levels of certian hormons which can cause you to go months with out. you should take a test and talk to your doctor because you dont want to wait and find out if worse then you think its b etter to tell your doctor even if you feel uncomforatable