How soon after finishing my anitibiotics for a urinary tract infection can i have sex?

I believe anytime: Unless there is a specific issue with your condition, the type of antibiotic you are using or some very unusual problem, taking antibiotics should not preclude one from having intercourse. If a vaginal or penile condom is used, i cannot think of a reason otherwise. Take the antibiotics as prescribed and take care of yourself. See your doctor otherwise (call or return to clinic).

As soon as you like: As soon as symptoms of pain and discomfort from UTI have settled down. Not if bladder pain is still present or if you experience pain with sex.