Hello @paris2099, Welcome to Connect. I'm happy to see that you have already connected with @pmm and @momsys. There are many members with MGUS who have shared their experiences on Connect in different MGUS related discussions. The search function on Connect is great for helping you find other members with similar symptoms. Here's a list of the search results for MGUS using the search box at the top of the Connect page:
https://connect.mayoclinic.org/search/?search=MGUS.

You mentioned have pain in your jaw bone. Searching for MGUS +jaw pain found 6 posts that may be helpful - https://connect.mayoclinic.org/search/?search=MGUS+%2Bjaw+pain.