Hi. Thanks for your query. Noted your history of waking up with pain in abdomen and feeling to go for bowel movement but could not. The pain increases with sitting up, coughing and walking. You are on 2nd day of menstrual period. Since you have given a detailed history, it appears that there is some inflammatory process going on the right side and the probably diagnosis can be : Appendicitis Inflammation of the tubes or problems with ovary. I would advise you to undergo X-ray of the abdomen in standing position and Ultrasonography along with proper clinical evaluation by a General Surgeon. The diagnosis hence made will give us the plan for management.