Std panel negative. To all the stds?

Hello doctor feeling stupid while informing but I have had around 25 partners almost all were just foreplay no kisses no penetration only body love and genital contact and oral just no sex never ever All with guys but after spending 6 months of hell to wait to get tested for all the stds as I got to know how dangerous it can be Did all the test after 6 months Vdrl negative Hiv 4th gen negative Hiv elisa negative Herpes negative Chlamydia negative Hbsag negative Anti hcv negative Gonorrhea negative Ultrasound scrotum normal Ultrasound abdomen normal Cbc normal Urine routine and culture normal Anti hbs - 65 I am worrying how I am immune to all the stds? I even didn't got any wart but from two days feeling itchy at my penis but it seems clean dermatologist say you have anxiety. Is it true that I am immune to all the stds? I have never slept in peace from last 6 months will never ever have something like this now