ADHD and feeling sick and Nerves.

Patient: I have ADHD and add and i cant go to the doctors to help me and i really want to but i feel nerves and sick about going so i hide in the backyard or in my room somewhere because i am nerves and feel sick and when i feel sick and nerves i get pins and needles in my thigh’s and feet and then i really worry because i hate to feel sick i am 12 and a boy i would really appreciate if someone can help me Thank you.