A small bump on your stomach can be caused by many common, harmless conditions, such as a benign fatty growth (lipoma), a harmless cyst, or a minor skin infection. Because the correct treatment depends entirely on what the bump is, it is not safe to recommend a specific medicine without an examination. For example, an infection might require a generic antibiotic ointment like mupirocin, while a lipoma requires no medication at all. Please avoid squeezing or poking the bump. I recommend having a healthcare professional examine it for an accurate diagnosis. If the bump becomes painful, red, or hot to the touch, please seek medical care promptly.