I have been progressing pretty well. I think in some ways I could be 90% recovered YAH! Here's my question. I looked at the Buffalo study and not entirely clear how to apply..

Been working with a trainer. I went to the gym 4 weeks ago -totally overwhelmed. Came home and slept for 3 hours.

Didn't go following week. I went last week and did mainly machines seemed ok; however, when it felt like the weight was too heavy I got that pressure feeling in my head.

A few days ago I felt like I had made some big improvement. I drove yesterday and today. Not far and not during any traffic. Definitely had to pay more attention - not automatic so to speak. This morning I drove to the gym. I worked with my trainer. He had me do some stationary lunge type exercises etc. After about 30 min I was sitting doing a lat pull down and I don't know what happened. I definitely felt I was breathing hard by this time. I was quite surprised to feel so out of breath given my past. Anyway I just sat there; I don't really know what happened I was just sitting there and then the tears just started to flow down my cheeks. I don't know why. It was almost like I had a temporary regression. I had a bit of trouble with finding words. I just sat still for a while and after a while I felt better but I a bit off. I waited, had some tea and sat and felt better before I drove home. When I got here my husband could tell from my face I guess that I struggled.
I am back to resting now except writing this.

Last week when I walked up and down our driveway for some exercise which is steep and my heart rate went up same kind of thing happened. I get a disorienting feeling and a pressure like someone pressing on my head esp when I went inside and it was hot. Don't know if this sounds strange but almost like my brain was swelling/taking up more space in my head. I went outside and cooled down and felt better but then needed to rest. Is this "normal"? Ideas best way to progress?

Thank you.