Brief Answer: Lump pops up below ribcage left side,causes... Detailed Answer: Hi, I have read your medical history and what you are experiencing goes for a possible hernia. Hernia is a bulge (as you call it) which includes part of the intestines that have found an "empty space" and enter in each time there is a bowel movement. Apart intestines, according to the description of the location you did, it could be part of stomach or nearby muscles. Next, you are telling to be a carpenter. Perhaps you had any trauma in that area which got unnoticed until now. Another cause could be masses including lipoma or other types. So, as you are saying, the bulge is getting bigger (you can see it) and continue to have pain. I strongly suggest to get physically checked by your physician for further evaluation and run other tests to get treatment as soon as possible. Hope it answered to your inquiry! Feel free to ask me again if you have further questions. If you like my answer, kindly rate my answer and write a review as well. Thank you, Wish you good health. Dr.Alba

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