Constipation, vomitting sensation, pain in upper stomach. Suggest

Hi, i am 28 female. i was suffering from constipation and uneasyness, burping. but stool was normal colour. consuled doctor. took Cyra pill for 4 days night before food as per doctor prescription. still the condition was same, light vomitting sensation, little chilled and green stool. took sepmax for 3 days morning and night after food as per doctor prescription. but the condition was same, upper stomach pain. consulted other doctor, took pentodac dsr before food night for 10 days and yogut for 5 days morning and night after food. stool is sometimes normal color sometimes green, sometimes green and normal color mixed. doctor has prescribed pentodac dsr for 20 days, now i am taking this pill on 11th day. condition is slight upper stomach pain, but from past 2 days constipation and green stool, burping is bit controlled. now i am too worried if it is ulcer or something. when i am stressed upper stomach pains, when i am not stressed pain is less..doctor has told to do CBC, ESR and tsh blood test. please suggest me what is happening. i am scared.