Hi. Thanks for your query. Read and understood your problems. You are a power-lifter and has pain in the lower abdomen and pelvis forthe last one and half months. There are no associated symptoms of any bowel or bladder symptoms nor you have vomiting, nausea, ; no bulge. I think you should seek a Direct physical examiantion by hte surgeon as on actual examiantion he will check you in the upright position and ask you to strain or cough to find out whether there is a hernia or not. He can tell you whether this is a strain of the muscle or not. If the abdominal wall is without any tenderness, you have to undergo few investigations like tests of the blood, urine and stool. An ultrasonography to see for any internal problems like appendicitis, lymph nodes or pelvis inflammation of any sort. If required a CT scan of the abdomen and pelvis will be done to rule out any serious problem.