I think it's perfectly normal to have some anxiety when your concerned about a relationship and it is even normal to get depressed sometimes. I think part of the problem at least in my case, was thinking I was abnormal for being nervous or concerned or even depressed. The truth is everyone is like you, they get anxious and depressed some people are just better at distracting themselves from it or suppressing their feelings. I was suffering from some 'mild' anxiety according to my counselor... I was graduating college, working on an honors thesis, and just started birth control (which really messes with your mental state). I was anxious all the time, I couldn't drive myself to school, sit in class, hang out with my friends, and I had this constant look of worry and dread on my face. My first instinct was to blame myself and to separate myself from people because I felt like I was going crazy. But I slowly realized that I am person just like everyone else, there isn't an emotion I have had that someone else hasn't shared. The key is to not beat yourself up, but when you do and the snowballing of negative feelings and anxiety come rushing back, get to a place where you can be alone and deal with it. Cry, shake, get dizzy whatever your symptoms are. Most importantly do not feel guilty for tending to yourself, even if it disrupts plans.