I have pelvic pain, after drinking a cup of coffee. it can happen right after, or later. i drink caffeine the rest of the day no problems. ulcer?

Not ulcer: unlikely ulcer with pelvic pain. May be bladder spasms? Caffeine lowers GABA which leads to excitatory states of smooth muscles. Pelvic pain suggests bladder spasms? If u feel the urge to urinate, then bladder more likely. If u have urge to pass gas or have a BM, then it's the colon being stimulated. If so, work on BM's-stool softeners, hydration, fiber.