Aw, Nathan, that sounds just awful. I’m so sorry you’re having this much pain on a daily basis. You definitely need to have this explored further to find answers and to get you off that morphine.

‘Patchy bone’s? What the heck does that mean anyway? Were there areas that looked like ‘holes’ in your bones? Edema? Dense areas? Having anything untoward showing up on imagining warrants a followup! I’d be on that with the tenacity of a honey badger! Don’t give up!

I’m not implying that you have multiple myeloma but the rib and spine pain you’re experiencing sounds very much like symptoms many people with Multiple Myeloma endure.

You’ll get tired of me tossing out information for you but again, it’s a way to help you advocate for yourself when you contact your doctor. Here’s some information on Multiple Myeloma. Again, not saying this is what you have but the symptoms are very parallel after your diagnosis with MGUS.
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https://www.healthline.com/health/cancer/multiple-myeloma-bone-lesions-damage-pain
Please don’t let another day go by without making an appt with your GP to get a new referral. You need to feel that you have hope in your life so that you can start healing and feeling better again. What do you think? ☺️