Im confused about my dianosis

There is no doubt in my mind that I’m DID.
I also have been labeled Obsessive Compulsive, Schizoaffective, and have Panic Disorder.
I’m on all kinds of pills for it and I’m worried about what it’s doing to my body.
What if my alters are the ones that have the other mental illnesses? I ask because just out of the blue, I’ll start worrying about people spying on me, or I’ll start to obsess if I’ve done some thing and I’ll start the checking, but then it goes back to normal for a while. My meds work…sometimes. I wonder if I’m not still having problems (because I’ve tried a bunch of different medication) because I-me-the body-does not have any of these disorders…the alters do. Would medicine fix the alter’s psychosis, ect?

I don't know about the meds thing, but I can safely say that sometimes system members can have problems that others don't. I have PTSD, as do some of my system members, but others don't. Some have ADD/ADHD, others don't. It's entirely possible that you were misdiagnosed, and either those problems don't exist in you (and the DID was the real cause) or they exist for someone else but not you.

Maybe talk to your therapist about it?