Sleep depravation and anxiety are normal effects, as is weight loss and appetite loss. It's your body coping with the stress of the situation, preventing you from having more serious health problems.
Don't worry about how she feels you've changed. How do you feel you've changed? Do you feel better about yourself now than four years ago?
Slow down a bit and calm down. Exercise really helped me through the worst (so far!). While GAL is important, it doesn't mean you have to hare about all over doing things. It could be as simple as reading a book alone or just listening to music. It's about being happy with who you are right now. That's what you need to concentrate on right now.
M 45 W 52 SD22 S9 D8 BD 6 April 2015 Not living together 4 Dec 2015