Need to vent.

Hello everyone!, this is my first time posting on this subreddit. I really just need to vent & any advice is appreciated. My husband of 10 years has bipolar disorder (type 1). While he is going thru his episodes he can be just pure mean. We share 3 sons together & when it comes to the parenting & cleaning, school stuff, doctors appointments, grocery shopping etc it’s all on ME!. I work part time for 5 hours a day & he works 5 days a week & gets paid way more than I do & his excuse when I ask him to help me with anything is : Well i work an actual job that requires me to be tired & I’m not going to help. :( Recently I found out there’s a possibility I could have cancer. I’m getting a biopsy done on my left armpit this upcoming week & I know that’s not good to go ahead of yourself because you don’t know what’s going to happen, but my fear is what if I do have cancer? Who’s gonna take care of me? Who’s gonna take care of the kids? Who’s gonna cook, clean etc.?. Even when I have the flu or when I had covid I still had to clean and cook & if he did help he complaining the whole time & would complain about me being sick. I have been praying non stop about this & it’s making me very depressed & anxiety.