Hello friend , Thanks for your query to Health Care Magic .. I read your health query and it seems that you are likely to be diagnosed as Irritable Bowel Syndrome which should be treated promptly by Doctor to get rid off alternative diarrhoea and constipation symptoms . I suggest you to Consult a Gastroenterologist and endoscopy / colonoscopy studies have to be done to approach to right diagnosis at earliest which helps in proper guidance in treatment of underlying disease . Do not be worried about your problems as it is curable one with medication and dietary changes in lifestyle. I suggest you to get prescribed for Dicyclomine which spontaneously reduces pain in left lower abdomen . Plenty of water is mandatory to improve nourishment to body and to avoid dehyrdration . Restrict diet stuff that are intolerable like glutens .. Diet rich in fibers is helpful in Bowel disorders . Consult a Gastroenterologist before starting on drugs . Hope this information is useful to you . Thanks & Take Care..