I was in weights class 2 days ago and the coach had us doing high reps squats. 5 reps,then 10,15,20,25 then back down.On one of the sets the back of my head lights up like a Christmas tree and gets worse until I rack the weight and stumble onto a bench. I had a dull headache for the rest of the day but it was gone the next day. Today I'm squatting and the pain comes back after I'd only done 2 sets of 5 with warmup weight. I've had 2 concussions and this is really scaring me.
ANY ADVICE IS WELCOME