I am in exactly the same situation, only it’s my dad that has been diagnosed. He is 70 and was diagnosed in March with very early stage 1 MM. No treatment just being monitored, he is due to go back at the end of the month for his first check, so obviously we are all pretty anxious. I feel I know very little about this and no one in my family seems to want find out anything about it, I have no idea what any of his results were as my dad never seems to want to discuss it. Most of what I do know has come from this site , which although a little scary at times, has also been a godsend to help me try and understand what is going on.
So I know exactly how you feel right now!!!