Pelvic inflammatory disease

Hi everyone! i hope even one person can comment if they’ve been in this situation. So i’ve been diagnosed with pelvic inflammatory disease and i DID NOT get it from an STD all my test have been negative. i did have a IUD for 2 years which i got removed and believe maybe that could have been the cause. I just want to know after the course of antibiotics DID YOUR PID EVER RETURN? i have so much anxiety to possibly get this again after i finish the medication 😭