I have contamination ocd and am just barely beginning counseling for it. Last night I went to two stores and while walking I got a bit turned on with something I saw earlier in the day and didn’t think too much about it. Then on the drive home I felt a sensation in my bottom area and assumed it maybe pre cum. I got home and went to the bathroom and didn’t see anything. I jumped in the shower 30 minutes later and masturbated. I made sure to wash my hands with shampoo to get the stuff out of my hand. It’s a shower that my whole family uses so washed the part of the wall where my stuff got on with body wash and with Lysol spray, and an all purpose cleaner after my shower. I can’t stop thinking that I contaminated something and that someone might come into contact with my semen if I didn’t clean well enough or if the semen got somewhere else and I didn’t notice. I couldn’t stop thinking so much about it that I didn’t go to work today