Re: feeling really bad
It sounds like you're in terrible pain. Call your doctor or go to the ER ASAP.
What you're discribing could have many causes. The headaches and dizziness along with pain in the neck concern me. I was thinking ear infection but that wouldn't cause the pain in your arm. The only way you'll know what is causing this is to go to the doctor. If you can't get in to see your doctor today, go to the ER. Better to be safe than sorry.
Live, Love, Laugh.