I dont know. Own i need help of others.

4 years ago it starts, In beginning I got afraid of pigs whenever I see them my mind thought that I was touched by them then I come to home take shower. after sometime I started recording video with my phone so that whenever I see them I start video and it keeps a record that they are away from me. this all happening to me since 4 years.but now from last 4-5 months  symptom increases. firstly in my mind unusual thoughts of my family, my career starts coming daily. and I started unusually washing my hands regularly. At that point I was thinking that I wash hands for protect my family against covid-19. After 1 month problem of washing hands increases even I started washing my legs regularly with soap. now since 1 month I am so depressed I am unable to go outsidemy home because unusual thoughts that if I will go outside my hands my legs my clothes will get durty or else I will touch by the pig even it is not there.. I am unable to do things my own I need help of others.