Contamination

I live in my parents’ house and they are currently redoing the roof and the insulation in the attic. My parents’ house is at least 50 years old. The only way into the attic is through my room. I knew I would have to relocate but now I feel like my room is contaminated and can just never been clean. I feel like everything needs to be thrown away that was exposed to the old insulation or touched by the workers. No matter what I do I just will always think that my room is dirty. Does anyone know how to push past getting stuck with these thoughts? Or dealing with people making you feel worse because they don’t understand?

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 a long one lol but basically, a couple of weeks ago I went to the toilet (#2, sorry for the tmi). Let's just say it was messy. I remember that a speck of.. #2.. Fell off the piece of toilet paper. This was probably the worst thing that could ever happen. I can't remember clearly but I'm pretty sure my jeans were on the floor underneath near where the speck could have fallen. There was also a towel. I don't know exactly where it fell as it was so small, but I made sure both the towel and the jeans went in the laundry basket and I cleaned the floor near there. Fast forward to like the next day. My mum does most of the laundry, so she will have picked up all the towels and clothes from the laundry basket and taken them to the wash. The problem is the speck. I don't know where it went but if it was on the towel and she picked it up.... Thus, contaminated mum. And she also puts clothes away that are dry. I remember that day she put my hoodie in my wardrobe, and I haven't worn it since because I feel it is contaminated. I haven't worn the clothes that have touched the hoodie. This leaves me with not a lot of clothes. And today I finally snapped and picked up a sweatshirt that had maybe touched the hoodie. And now I'm just sat here spiralling, wearing it. What if it touched the speck? What if the speck touched my mum and then touched the hoodie which then touched the sweatshirt I'm wearing? Please I'm so scared.