Hi Allycat.
You certainly can have OCD and many other problems along with schizoaffective disorder. Co-morbid conditions are very common.
As for whether you have schizoaffective disorder or not, no one other than a trained psychiatrist or medical expert in that field would be able to give you a certain diagnosis, and then only face to face. The disorder itself can be tricky to diagnose, and in terms of how people experience it, it is a moving target. Diagnoses can easily change. That can make attaching yourself to a particular label rather a bumpy ride.

I hope you find the best treatment for what you are going through.

TS