Advice Plz!!

Hi, I think after looking throughout the net, that I have adjustment disorder. I also suffer from OCD, but I don't think thats what's bugging me.

I am going to be trying out a new job next week in a new city, about 2 hours from my family. My parents are ok that if I don't like it, I can come home, I just need to try. My problem is, that I just start crying and cannot stop. I'm okay at home but when I went to fill out job stuff, I was fine for a while but as I was filling out paperwork I had to struggle to stop crying, the tears just started. I'm scared because I just want to try at least, and you'd think at 22 this would not be a problem, but my orientation is Wenesday, and Im scared that I will start to cry at orientation and panic and I won't be able to calm down. I hate crying like this and know I will prob want to cry, but I don't want to cry the whole day and have to hide in the bathroom. I get so terrified of trying new things sometimes and esp of being away from my parents, I know thats weird but Im really close to them. Does anyone have any tips to help me calm down if I start freaking out Tuesday? I would really appreciate any advice, because sometimes when the tears start it takes forever to stop, and I just feel at my worst, its awful. Thanks!!