personally, i do not think lack of sex gives men abdominal pain but that being said, we as men react to abstinence in different ways, so any man experiencing lower abdominal pain could be the way of his body telling him he needs to get laid.
Notwithstanding, Sexual abstinence affects men's wellbeing. Long abstinence can have effects such as: prostatitis, erectile dysfunction, diminished libido, untimely discharge, and others. The more established a man is, the more troublesome it is to reestablish his sexual capacity after a significant lot of abstinence.
Absence of sex is the reason for hormonal changes in the man's body, which, prompts body weight gain, causes issues with the skin, mental inconvenience, and different issues. Furthermore, an absence of a standard, sexual coexistence negatively affects the men's mentality. A man winds up unconcerned and detached; he loses enthusiasm forever. Men experiencing an absence of sex regularly get discouraged. Once in a while, an absence of acceptable sexual relations with a lady can even reason a difference in sexual introduction in men.