Hi there kathryn and welcome
Just to say I have never had the parvo virus. I can understand the logic of your thinking though.
Though stress in itself hasn't been proven to "cause" lupus, it can exacerbate our feelings of unwellness when we are in a flare. Being stressed even if you do not have a chronic illness is not good for you. There can be so many triggers with lupus and stress is one of the ones that we need to work on if we can. Easier said than done I know only too well unfortunately.
Thanks for sharing your thoughts. We are a friendly bunch here and we can be here for you if you want to vent, ask questions or supply answers to others who are going through the same as you. We all need to learn and talk about lupus as much as we can. I have had SLE for over 30 years, and I still learn quite a lot more each time I do research.