How do I get up and just.... clean my room?

Hi! I turn 15 in 2-ish days. I have diagnosed depression, adhd, and anxiety, and im getting evaluated for autism in June. As ive gotten older, cleaning has become a mountain of struggle for me. Its a biohazard at this point. I have mold, flies, and im sorry but cat pee too. It doesent help that i feel like im constantly beung judged, and pressured into cleaning my room, and tols that it doesent really matter if im depressed i just have to get up and do it. Which is like telling someone thats drowning to just breathe. Theyre constantly warning me that my roomates will hate me when im an adult. Im embarassed to pot about this but im running out if options as ive tried everything else. How do you guys do it? ​I've already tried listening to music, staring small, forcing myself to do it, but everytime I get overwhelmed and just start crying and give up. My mom said she would help me yesterday and now I just realized she never did.