I dont want to say that it is common but I have heard many people on the internet with a fear of lossing control, specifically hurting someone especially one they love. I find myself very afraid of losing control, or freaking out. That is probably what I fear the most. I would doubt you were getting schizo, personally it sounds like a lot of anxiety. I know many people are scared of this condition, sometimes your mind will play tricks on you. The mind is very powerful and can make you believe you have an illness, it happens to me all the time.