Have history of ulcers and serological evidence of Crohns. I've been taking 15 advil/day for 2 weeks now my stomach hurts. Possible causes?

Advil (ibuprofen) Too much Advil (ibuprofen) can cause exacerbation of ulcers and worsen the crowns. Stop the advil (ibuprofen) and see your doctor as soon as possible. Good luck.