I'm kind of panicking about cat feces

Earlier I posted about trying to get back to sitting on my sofa without a blanket covering it. And I did it, but now my day has been ruined. I left for two seconds and my cat decided to sit there, so now it's not clean anymore. This is because sometimes she's had number two stuck to her and no longer trust that she's clean. It took so much for me to just do that and sit without a blanket and now I'm just so done. I'm also scared to walk anywhere in my house. We sometimes get slugs in our conservatory and I don't walk in there anymore because there can be slug slime trails (it's carpet). The thing is, my mum regularly goes in there, my dad too. And then they proceed to walk around the rest of the house without changing shoes or anything. I'm just panicking because I was having a good day and now I feel like I'm isolated to my bedroom.

Sorry if this is tmi. In advance, I know some germs are fine - I'm all for that, and it definitely does ease some contamination anxiety. But I have lots of anxiety surrounding going to the bathroom, specifically number two. Again I'm so sorry if this is tmi. I went yesterday, and obviously my hands were contaminated because well, they are when you go to the bathroom. But also because I accidentally brushed the back of my hand against myself. When you're done in the bathroom you obviously put underwear back on, and trousers or whatever, but I wash my hands before touching my trousers but not underwear. So I do that bit before I wash my hands, but my hand, the very contaminated part, touched like a bit of my skin at my waist. At the time, I brushed it off, thinking that my trousers will cover that anyway for the time being. But then today, I wore leggings that are kind of small on me and they weren't as high waisted. And then I got in my bed, and had a t-shirt on, and probably touched so many things. I changed my t-shirt, meaning it touched my hair as I took it off. So now I'm paranoid I have poop particles all over me. I'm convinced I need to have a full shower again and wash my hair. I'm okay with having a shower, but I barely have enough energy for that let alone washing my hair too. I don't shower every day, so with my schedule, I'm not due to have one until tonight. I just want to be able to get up, get dressed, and go about my day. But how do I do that when my bed feels contaminated and I feel like I need to change the bedsheets. How do I cope when it feels like poop particles are in my HAIR. And that could totally be possible. I know some germs are fine. But I just don't know what to do.

This is ruining every part of my life. The carpet on my staircase is old and pretty dirty, and there's dried mud on it. There's brown bits, which I'm convinced is cat poop and there's a good chance it could be because there have been multiple times my cat has had it stuck to her after going in the litter tray. It's impossible to clean so I don't try, and my parents don't probably because they don't see it's dirty and because it's such an old worn out thing anyway. So I wear slippers everywhere except my bedroom. Only, the other day I stepped somewhere contaminated in socks and then put my slippers back on, so now they're contaminated on the inside which defeats the whole point. So now, if I want to get into bed, I have to take my slippers off outside my door, and my socks, and I have to put new socks on, but if I do that I have to wash my hands again. Which means going to the bathroom. Which means putting the slippers on. Which means I'm contaminated again. I feel so sick and I want to cry. There are so many not hygienic things in my house, and it makes living with this so much harder. I tell myself that what I'm going through are compulsions and intrusive thoughts and obsessions but how can that be true if there's a very real chance the brown on my staircase is cat poop? How can it be true when it's my own fault because I'm too lazy to clean it and I'm too lazy to try fixing the issue when there are so many things stopping me and there are so many things not hygienic about the house. I want to cry, it's too much. I can't tell myself I'm being irrational when I'm being rational. I just can't keep doing this. I want to lay in bed until I feel better but I never feel better. I have a doctor's appointment tomorrow about my ocd symptoms and thoughts but what am I meant to say? My house is a state and covered in mud on the carpet, and it sends me into multiple mental breakdowns a week? A day? Surely that's not ocd but instead is perfectly rational? I can't cope with any of this anymore, I want so badly to live in hygiene and cleanliness. It doesn't matter how hard I try, I'm never clean. I will never be clean. And I keep trying to tell myself that even if it's cat poop, it's not the end of the world. But I feel so ashamed. I feel dirty. I just want all of this to stop being so difficult.