Is there a chance I am pregnant?

Hi,
Almost three weeks ago I had unprotected sex. It was at the begining of a period, however there was only a 2week gap between that period and my one before that.
I have been really tired, my sleeping pattern is all over the place, I have had quite a few headaches and have had a funny feeling in my stomach over these past few days. Is there a chance I could be pregnant?
I am 19 and it was my first time.
Thanks.

You should defenalty have a pregnancy test to be sure because idk how many docters are on this site

You are probably pregnant!!!! But it's no use trying a pregnancy test now. Home pregnancy tests, even hospital ones cannot tell u until at least 5 weeks after you get pregnant, or 5 weeks after your missed period, so try in a few weeks. By the way, are you hoping to not be pregnant? If so, talk to me b4 u get an abortion