Help!! I’m petrified!

Hey guys. I’ve been stressed for like two weeks now when my bf and I had unprotected sex a few days after my ovulation time. He pulled out but I have been so worried and stressed to the point where it feels like I’m giving myself symptoms. My period is due tomorrow but I feel as if it won’t come even due to the extreme amount of anxiety I have. I am also already diagnosed with anxiety disorder and I have always been quite a hypochondriac