I have anxiety about getting sick: Advice?

Does anyone else deal with sickness anxiety? I have become a full germaphobe. I have 3 small kids including a baby. I don’t take my kids many places, I’m constantly watching where their hands go, then washing there hands, worrying about anything they may touch. Other kids around is a huge panic for me! I am talking with a psychologist but doesn’t seem to be making a difference. It consumes 95% of my daily thoughts. Anyone else dealt with this? What did you do?