Hi Jen & welcome!
It sounds like you have alot going on all at once. I know that sometimes work, dealing with my health issues, & doctor appointments is enough for me & then when other issues come up I am so stressed it's like I can't handle it all. I don't even want to think about any other problems because my mind says I have enough to handle.
You have so much going on and trying to make adjustments also it is bound to be too much. In the last year I have cut back my hours at work quite a bit because I just couldn't go in every day due to the pain & fatigue. I have really felt guilty not helping more with money at home, but I also realize that if I don't take the time for myself when I need to, then I may not be able to work at all.
I think these days everyone is going thru some kind of stress about money. Hopefully, you will get things straightened out with your health and will be able to get back on track, but if not, then don't worry about it. It will all work out in the end. With everything going on in your lives I think it would be normal for you & your fiance to maybe be feeling a bit cranky and stressed. Anyone would in your situations!
Just hang in there and take one thing at a time. Once you get to feeling better and get things worked out with work and your health (don't go back too soon unless you feel you are up to it) things will start to look better and I'm sure your fiance will be much happier. He is probably just as stressed as you are & also maybe worried about your health. When I am hurting and feeling down, I know it affects my husband.
Hang in there, take it day by day & try not to worry about fixing things all at once. It will all come together in the end. You need to just focus on you right now. Good luck and keep us posted on how things are going.
Hugs!! Margie