Sighing away

Am I excited or nervous? Am I worried or calm? Am I happy or sad? So, what am I? I'm really excited on going LA, but I'm really nervous (so nervous that my legs are shaking tremendously) for the competition (because I have to get first place). I'm really worried of my school work (I'm gonna get a 10kg pile of homework!) but I'm calm as I think I'm able to cope up with my classmates. I am happy to go USA to see my brother and sister, but I'm sad because I missed all the school activities with my friends. So, what am I?
ご協力ありがとう。 Thank you for your cooperation.