Thats good news , sound like it was diaper rash , babies often get it you could put vaseline on as a barrier against the urine once the rash has healed ...
No its located only on his testicles. I kept putting the nystatin creme and baby powder and its already looking better
Look carefully at them to make sure there is nothing wrapped around them like a hair or a thread, and then try the rash treatment that margypops suggests. If they get worse by tomorrow, or if the baby acts uncomfortable, then take him to the pediatrician.
Could be a rash, maybe keep some cream or vaseline on him as a precaution against diaper rash , has he got an anywhere else on his body ?