How to feel better now: If your vulva (or the opening to your vagina) really hurts or is swollen after sex, Abdur-Rahman says you can try putting. Vaginal irritation and discharge are common problems for women. Find a Do you have a tender swelling of the vaginal opening or swelling of one labia? Painful intercourse may be a sign of INFECTION or HORMONE DEFICIENCY. of STRESS INCONTINENCE, a common condition after giving birth. But to notice the swelling you speak of . wow. To me it sounds an awful lot like your putting your attention in the wrong place. AFTER sex.