strange symptoms need help

a little over 2 years now i have had these symtpoms. i have very bad headaches, a strange buzzed feeling like when you drink alcohol, tingling in my arms and legs, pain in my neck, eye pressure that hurts, confusion, short term memory loss, feeling weak and being tired all the time. i could say i have a bit of depression also. i have had an MRI and a CT, and my doctor said nothing was wrong. He also said Multiple Sclerosis was impossible because he said i was too young. I am 21 years old. Any help woulld be great thanks!
i also do have strange bowel movements, lower back pain. the CT and MRI were just of my brain