I hate not knowing what to expect

I love to prepare for things... I hate not being prepared. It literally makes me feel like I'm going to have a panic attack when I'm not prepared for things ahead of time. This leads me to tomorrow... I have no idea what to expect at my dr's appointment. I can't prepare myself when I have no idea what is going to be done or what the dr will say. What if something is wrong with me... or what if he can't figure out why my cycle has been so crazy? I am trying to relax and just wait to see what happens. I will update tomorrow night with the news the dr gives me.