How to recognize rrms vs spms

Hello, so I have had rr for many years, very few flare ups. In fact initially thought it was cis. After a 15 yr break, I had a flare and discovered all kinds of ms activity has been going on in my brain for years. Now it seems like it’s always something, currently pain back, hip, leg, terrible limiting pain. Anyway it occurs maybe ms is taking a new turn. What have been some other’s experiences with going from rr to sp?