Showering makes me want to throw up?

The last couple weeks I have had to really force myself to shower. Like I'll be standing infront of the running shower with my towel and soap and everything ready and the shower is running and I'm undressed and I'm like physically recoiling feeling like I'm going to vomit at the concept. Like what gives man. I will force myself in and the entire time I'm just panicking and and jumpy and trying not to have a total melt down. I don't have any bad shower related experiences and the shower is clean.

What even is this. What causes this. How do I stop this. This is making every day so much worse and adding actual hours to my morning