Yes it's not really that big a deal. But for future reference don't play stuff that scares you that bad - it's not healthy
Is it normal that I played a horror game and now I'm always scared of it?
Yes it is. Sometimes we don't know how we will react unless we try something like you playing this game but always remember here its only a game and cant really hurt you so what youre experiencing here is in your head and sometimes to conquer that fear is to just play the game again. You'll face this situation many times in your life growing up so always remember to eliminate a fear is often to just face the cause head on. Good luck