After eating a couple slices of pizza last night, I began to feel some pain in my lower abdomen..almost like a gas bubble. Nothing changed until 4am the following morning- extreme pain in left/lower side of abdomen, felt the need to vomit or have a bowel movement. Did vomit once, and also had runny stool. Was able to go back to sleep after that. At 8am, got up, felt the same pressure/bloated feeling, same pain, and had more runny stool followed by bloody patches instead of stool. Afterwards, I still feel the need to have a bowel movement but do not need to. Pain is now a discomfort instead of a pain. I ate ate something to see if that would help and experienced the pain/pressure/bloated feeling while eating as if the problem was in my stomach.