This is Dr. David
he most likely had a foley catheter into his penis into his bladder during the surgery.
this foley catheter was to drain urine during the surgery and most likely the catheter bruised the foreskin and tip of the penis.
you can use cold compresses on the area and eventually the bruise should get better with time.
Thank you so much Dr David.
Thank you again. I will monitor his progress and get back to if I am worried. Kind regards, Jenni