I had a "thing" quite a few years ago before MS was confirmed where it felt like a baby kicking and/or turning (no chance!) under my ribs. It lasted a few weeks. It wasn't painful; just strange. I didn't do anything about it, but I was mystified. After MS was confirmed I just figured I'd blame it on that.

If yours has been coming and going all these years, it probably is just an annoyed muscle, brought on by the fever. I would think anything dangerous would have showed up in your tests or at the very least, caused some major pain. Sounds like your Dr. is on top of things.

Keep us posted!

C