Why you need to wait
It should go without saying that in the days following a vasectomy, it’s best to avoid any unnecessary trauma to the surgery site. Even though masturbation usually isn’t as rigorous as intercourse, it still has the potential to aggravate the wound.
Another reason you need to wait is that orgasm and ejaculation involve a number of intense muscle contractions in the genital area, which means having an orgasm could be uncomfortable if you’re still experiencing swelling, bruising, or tenderness.
What if I masturbated too soon?
Continue with your recovery process as usual and allow the surgery site to heal. Follow the instructions given to you by your doctor and try to relax. Avoid further sexual activity and try to lie down as much as possible. Make sure you use cold packs to reducing swelling and wear supportive underwear. If you are experiencing a level of pain, swelling, or bleeding that concerns you, contact your doctor as soon as possible.