I would say that you should avoid exercise altogether if it provokes your symptoms The key is doing the things that do not provoke symptoms and avoiding the things that do.. You should hopefully get through it, you have age on your side! Like yourself, I exercised 3 weeks after injury and now I am appriaching 4 months with pcs, I had dizzyness in the gym anda whole host of terrible symptoms after the dizzyness. After having lots of headaches, and head pressure, today I just have numbness in head instead. I hope I am on the road to recovery, and I hope you get there too.