My neck hurts a lot. i crack it about 6-7 times a day, it gets better for a while then it hurts again. haven't been to a chiropractor. what's the problem in my neck?

It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. Regular aerobic exercise will help by making your muscles stronger and more flexible. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs.