hi ive been having stomach problems for a while ive had a scan but no results yet i have a lump under left rib when try to eat i have a swollen lower tummy i need to wee everytime i drink no burning stinging or leaking just feels like ive waited ages to wee i suffer from migraines, fatigue and aches yesturaday a swelling has appeared on my bac sort of in line with spine on mid to lower left side ive tried anti acids n kolanticon gel but i dont have diaherra but constipation only relieved if take laxative what could be going on ?