I woke up with intense pain in my upper abdomen. it comes and goes, but when it comes, it is extreme. I keep going to the bathroom, but dont "go". No gas. IT feels like pressure building up and a few maybe 10-15 seconds later, it fades away. Then it returns a few minutes later. I just want to double over, but that makes it worse. What can I do? I dont want to drive a car even.