Howdy,one of the things I've seen so far is that those on Ocrevus and some other DMT's have a negative association with the vaccine, resulting in low antibody count after vaccination ,making it almost but not completely worthless

I am fully vaccinated with no issues. Read all the usual sites such MS Trust, etc. They all report no special MS issues and recommend being vaccinated.

I've had 2 Pfizer shots. The First one, I didn't feel any symptoms. The second one I felt a little like I was getting the flu. No fever, just a little nauseas and body aches, for about two days. I just got the regular flu shot today, no problems. By the way, I'm 66 and have had MS since 2001.
I take OCREVUS, 2 infusions every 6 months. I have had no problems.

I had trouble after my second dose of Moderna and am still being treated. I still support the vaccine, all my family is vaccinated.

Sorry you had such a hard time with the 2nd vaccine.. Hopefully when you get the booster it won't be so bad