anxiety

hi! almost three weeks ago i had unprotected sex with a guy and i let him finish in me. i have the copper iud so i felt okay letting him finish in me. i normally have anxiety and overthink things a lot to the point where i start seeing “signs” about pregnancy and deem any symptom i experience a pregnancy symptom.

have any of you experienced this? and what did you do to help ease your mind? thank you!!!!