Have Crohn S Disease, Stomach Flu, Green Stools, Stomach Cramps, Tenderness In Stomach. What Is Wrong?

I have Crohn's disease, though it's been under better control for the last few months. The week before Easter I had a small bout of a stomach flu (green bowel movements, weak, fever). It lasted for a few days and passed. Last Monday I had a hoagie from a restaurant that I frequent, but a few hours after eating it, I had HORRIBLE stomach cramping/pain. I took some Gas X, hoping it would help to relieve it. After tossing and turning all night, the pain eventually started to subside by the morning. I was experiencing rebound tenderness, but only for a day or so after the initial horrible stomach cramping/pain. Now it's nine days later and I just had a bowel movement, but I also had a couple waves of intense stomach cramping/pain again. They've passed, but I feel a mild pressure sensation on my lower right side, almost like it's on my hip bone.