Should I be worried?

About 6 weeks ago I got into a bad habit of taking my combo pill at different times. I always took it everyday but one day I would take it at 8am, the next 2pm, the next 12pm etc. During that week I had sex with no condom but my bf pulled out before he came in me. After that day I got back into my routine of taking my pill everyday at 8am. I never get my period when I'm on the pill and my anxiety is driving me up the wall! I don't think I'm pregnant so why is my anxiety making me believe that I am?? Should I be worried that I actually am pregnant?