Hi Julia, snap I get just the same feelings, if I walk I am fine but if I do exercise where I run around I feel not quite with it, it could be something to do with the blood flow, it's like disturbing the brain as such, sounds weird but I'm sure you know what I mean, I feel spaced out for a little while afterwards aswell. As you haven't exercised properly for a while just take it slowly and gently, let your body get used to it again.

Take care,

Polly x