I don't think you can consider yourself in remission if you're on prednisone. I was down to 2.5mg when I flared up last time. I couldn't get off so I guess I was never really in remission. I am again in "remission" but I am on prednisone. I am sure if I stopped the prednisone I would start flaring. Hopefully with a slow taper I will be able to remain in remission and get off prednisone.
I don't think you're quite in a flare by hearing your symptoms but they are definitely a bit worrisome. I know if I started noticing those things happening, I would think a flare was eminent. I always expect the worst.