Hi and welcome to DWD.
I'm glad you're going to call your GP. It sounds like you really need to.
Can you write out a bullet point list of what you want/need to say to your GP or print out your posts from here?
WRT your wife - hunni, I've been in the position of your wife when my husband is poorly and I promise that she is probably just as unsure of how to communicate with you too right now. Not knowing what to say and also not knowing everything that's going on.
Sit down with her and tell her. Or write her a letter?