Having painless spasm type feeling under lower left ribcage near stomach all day. won't go away tried pepto and it didn't work?

Try local heat and otc tylenol. If not better pl see your doc. good luck

Sometimes gas can get trapped in the colon under the left rib cage ( splenic flexure syndrome). If that's the problem, applying heat to the area helps break down the gas so it can be passed out through the rectum. Heat application may also improve muscular discomfort. If symptoms persist & especially if there's associated abdominal tenderness, get examined & advised by a physician.