I've been having almost constant pressure in my lower abdomen for 3 days. It can feel like gas and sharpen. It feels like an intense bowel movement or release of gas would relieve it. I have had daily bowel movements and a little gas but the pressure/dull pain persists. At moments it feels like menstrual cramps. Today I've increased my water, fiber, and took cod liver oil thinking that I may have an obstruction. Is there anything serious that this could be? Would an enema be helpful?