I have been having a major discomfort in my lower left abdominal area. This area is an inch below my navel area. Depends on how I'm sitting this discomfort moves around from upper left back, extreme left side of abdomen but if I sit with my back straight then this is felt in the lower left abdominal area. After passing bowels, I always feel like I haven't passed it all completely. I constantly have ulcers in my mouth. I spend 20 days in a month with multiple ulcers in my mouth.