I feel for you. It does become very difficult. I've been dealing with overburdening pain for 18 years and I am 49. There are days I want to cry just because I have to get up to use the bathroom. You have to push through sometimes and then sometimes listen to your body and just be down for the day. Hang in there.... You'll manage. There are many of us here to vent to (or with) Good Luck.
You might want to consider mobility assistance, like cane, walker.... My room looks like an hosp room I have a wide assortment of canes at every door jam, a walker I use mostly, and my wheels I have three one companion wheelchair, one I can wheel, and I have a scooter all in red don't ask why red just makes me feel better, hopes this helps.