Anxiety

I have been freaking out that I may be pregnant... I have been peeing a lot but it has been a little over a week since I had sex?? Many women say it took much longer for them. My period is still due in a few days though. I can’t sleep, I’m peeing a lot it seems, and I’m very gassy. I struggle with anxiety issues and I know these are a few symptoms of being really anxious because I am beating myself up over it mentally. Does anybody have any advice?