Feckin, sounds like a tough weekend.
I find my sex drive takes a plunge when I'm tired, stressed and overweight. I think it's quite normal but I understand how it can be adding stress about your relationship and making things worse.
What are you stressed about at home? Is there anything you can address?
I'm a big fan of lists and setting goals to make me focus.
So, this time next year what would you want to have happened and where would you want to be? Might be a new job or new house, to have a room redecorated, to have lost weight etc etc.
Is it realistic to do it in a year? So if you want to go and do a degree it wouldn't be, but it would be in 5 years - if it's a longer term goal still write it down (it's important to write stuff down but you don't have to share it!)
So 5 and a half years ago I was living with then DP, not married, not in my ideal job, no kids and in a tiny little house. I decided that I wanted to get married, have kids and get a promotion then move.
It made sense to get the promotion before TTC so I'd be better off on mat leave and go back part time on more money. So that was one goal and I spoke to my boss and found out how I could do it. She set out steps I would have to achieve and I could be methodical about.
I did similar with everything else and now we are married, have 2 kids and a nice big house.
The main thing I needed to do was understand my goals and be clear with myself what was essential to my happiness and what was flexible.
I don't want to sound like a self help book, but if you can get to the bottom of what you want your life to be like it will be easier to achieve.