Neck pain, head pains, lil nausea, lil lightheadedness I'm 21 no health problems had a normal CT of the brain 2mths ago & MRI of brain 4-18-13 normal?

Migraine possible. Some of the symptoms are consistent with possible migraine. See your doctor for migraine workup.
Possible neck issue. It is not uncommon for neck pain that goes to the base of the skull to have an etiology in the neck. There are large neck muscles that attach to the base of the occiput. When these are injured or sprained, they can tighten up and spasm. The fact that your ct and MRI of the head are normal suggests the problem is not with the brain.