I feel sick. period?Anxiety? Both?

Okay, so I didn't feel that bad earlier. Just a little nauseous but it didn't bug me. Then we got in the car and I started thinking about my New York trip ( on Tuesday) to visit my dad and I became so nervous! I love seeing him but I hate flying by myself ( I've flown by myself a bunch of times, and yet I'm scared) . I have a huge fear of throwing up and I'm scared I will get sick over there or on my plane ( I don't have motion sickness, its just a fear) I know, I sound stupid, but okay..anyways,I went to the movies and I started shaking,chewing my nails, then I got really nauseous. I wasn't sure if the feelings were anxiety or pms ( I'm supposed to have my period next week). Now I'm stuck with the nausea and clenching my teeth. :/ what is happening? I'm already seeing a councelor and I've been to the doctor and they've diagnosed me with ADD which may cause me to focus more on my Anxiety than anything else :/ just Fyi aha thanks!