Hi, From what you have mentioned, it seems that you are suffering from obsessions regarding contamination. Obsessive compulsive disorder (OCD) is a conditions characterised by having repeated thoughts about certain things and in response to the thought performing some repetitive action. in your case, it is related to contamination. As a result, you avoid it as much as possible and might also be spending lots of time in washing and cleaning. Other obsessions usually consists of having doubts, and repetitive checking behavior. I would recommend that you consult a psychiatrist for complete evaluation and initiating treatment. Medications like fluvoxamine are effective for OCD. In addition, you can opt for therapy with Cognitive behavior therapy in form of exposure and response prevention which is a highly successful treatment option for OCD. I do hope I was able to answer your query. Best wishes.