Back on this board again!
23yr Cluster Sufferer in UK, currently only on O2 for treatment
I have had a similar thing happen, Im back here after 2 years remission, and they are back but different, much more in my sinus and throat now, with the pain, still excrutiating, I have high flow oxygen and am using a tank a day.
The swapping sides has happened once to me, when I tried a low dose 1.75g of mushrooms infused in a tea. I am usually right side affected, but the cluster swapped sides and was easier to deal with as my right side was very painful from shadows then.
hope that helps.