Hi Diane,
I pray your Son has something easy to fix, and not MS. Jacob sounds like a very smart guy who has a great attitude, just like his Mom.
I wish you success with your 4th back surgery. I had one and it was not easy to follow the rules. I had to stand or lay down only, for two weeks, no sitting at all.
I hope today your son's doctor has the MRI results, with only good news.