Is it possible for masturbation to cause numbness in my abdomen?( i masturbated in a hot tub) if so what is it exactly(nerves?) and what can i do to stop the feeling or help myself? thanks for your time?

Mastrubation is an unlikely cause of your symptoms. Avoid inserting objects into your vagina. Give yourself time to recover from the sexual and emotional stimulation. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV and Covid vaccines.