Hi, Hope. Welcome to the forum. As you can see, the folks here are just wonderful.
I have had mid-back issues for six years now and this year ended up in the hospital with the low back. The doctors said my low back just got worn out from compensating for the rest of the back all those years. So...I can relate. (well, I don't have kids, so maybe I can't completely relate...)
I was glad to hear you had an MRI - that means you have a doctor checking things out. Hopefully it will just be a temporary issue for you and will resolve quickly. I hope you have a "significant other" to help wrangle the kiddies at least for a little while each day! Best of luck.
BTW, Gramps...You've just described exactly what makes you the BEST Grandpa EVER for your grand-kiddies!
My biggest wish for every child is to have someone love them that much. (in my line of work, I see far too many kids who don't get loved enough.
) So you just keep on spoiling your little ones!