I have struggled with my rehab. Had a big problem when gout flared up.
Recently realized i am not taking simple walks, so i restarted. Gentle walks, chat whilst i walked. Five days and i was doing a gentle mile. Then day six i did just a hundred yards extra. My head spun. I had to stop and grab a fence to avoid falling. My legs tried to run away from me.
Quite a struggle to get the final yards home. Then just sat in a heap for two hours to recover.
Later i got a lot of discomfort that seems to be indegestion.
Whatever is going on.