i need help asap

i can handle it if its my own contmaination but this is someone else contaminating me. im at the laundromat after postponing it for so long as i have no vehicle and the one in my apt complex has roaches and is dirty. im at one that looks clean but as someone with ocd i need to wash my hands!! so i go to the restroom. no hand soap. the restrooms have locks and thte one i went to was open and also said out of order so i assumed thats why. i asked the front desk lady if i can have the code for the restrooms. she tells me that one is open. i say oh but theres no hand soap. then she goes to open dish soap. the entire time shes been having a tissue to her nose. she OPENS THE BOTTLE WITH THAT TISSUE. WTF. then she has it in a position like its gonna pour and i feel pressured to make a split second decision. and i had touched dirty underwear and the faucet in the restroom so my instinct was soap is better than no soap and i just let her pour it. i wash my hands and panic. i start panicking the whole time im here and my mom starts yelling at me and everyone can hear. i used target brand lysol wipes and hand sanitizer my mom had . i still had to touch and dry my clothes so that had to be it but i feel like everything is contaminated. my mom is saying i should have just told her no. but id be feeling anxious either way but shes right to be mad at me i cant do anything right. i just want to wash my hands properly i mean what kind of place doesnt have hand soap especially an establishment to clean. it didnt even have an empty bottle it just had none. i checked the reviews right now and one mentioned that the owner refuses to put hand soap. i dont even know what to do or how to feel clean. ive been touching my face and shit and my mom has been yelling at me in front of ppl. i just wanted clean clothes for work. i hate myself so much and idk what to do and i need help i feel like im the only person on this app that has had this experience.