It's always good to be a little paranoid. If you think someone is watching you, they probably are. I used to be an atheist, which is a personal story that no one wants to hear (I still belong to no particular religion), and my husband is a lifelong atheist. He was 10 when he announced in Sunday school that he did not believe in God and he was kicked out of the class. Oh, and his dad was the pastor. That went over well.