Why is my penis itchy after having sex. i always have an abdomen pain few hours after sex or the following day, what could be the cause? do i need to see a doctor?

After sex: Itching of the penis following intercourse could be caused by yeast infection or allergic type reaction to condoms,vaginal creams,or be a nonspecific irritation. Abdominal discomfort after sex can be from abdominal muscular tension caused by contractions during orgasm, urinary bladder,prostate,bowel irritation. I recommend an examination of your penis,prostate,abdomen by a physician or urologist