4th of July/Family get togethers

I have contamination OCD that causes me to excessively wash my hands/clean items with disinfectant wipes. I know I just need to start with small exposures but how do I do that without spiraling? I tried a while back by just touching the outside of my dishwasher and not washing my hands after and it led to me being unable to even exist in my house. I basically lived on my couch for three weeks as it was the only 'safe' space that I had not touched with my dirty hands. I had to take a week off work to clean my house to make it somewhat liveable. I still haven't got round to cleaning everything though so things like my kitchen are still no-go zones that I don't enter. I just don't know how to start ERP without it making everything worse. Any advice would be appreciated. I am not seeing a therapist at the moment due to financial constraints.

Last night I was staying at my boyfriend’s house and couldn’t sleep. I felt like i desperately needed to go back to my parents and clean and organize my room. This has happened a few times before when I was staying at his place. Since then he’s been very upset with me. Does anyone else’s partner do this? Any advice? It’s been hard. He’s made me feel so shameful for having OCD. As if it’s not tough enough /:

It's been a year since I've been able to stay home alone. I don't know how to fight this. I feel like the world will collapse on me. That the house will cave in. Or I'll just lose my mind and scream and run outside screaming and saying the world is falling type thing. I don't know how to help myself. I'm to scared to even try to be alone. I have to have my son 18 stay home with me or my aunt stay with me when my son does leave. It's horrible. I feel like I'm holding my son back from so much. I don't know how to beat this. Please help