I work with hundreds of doctors and nurses, among others in a hospital. And the majority think chiropractors do more harm than good. But there is also the group who swear by them. It's a debate you will never get a good answer to. If they are cracking things, or putting parts back in place, then I would not go yet. You will become reliant on one your whole life.
How old are you?
One thing I can tell you, is that a few months, although it sucks, isn't that long. Especially if you have poor eating and sleeping habits. Like others mentioned, you need to make a family doctor visit first, and probably get some basic tests, like an XRAY and or MRI. To see if there is any real damage. The decide if you need any further treatment, surgery, physical therapy, etc..
I would say make an appt with a family doc, until then eat real food. This means vegetables, fruits, and protein. Baby that area, get a sling from the pharmacy, and keep ice on it, and ibuprofin. If you can take a anti-inflamitory, and it helps, you probably have some swelling, and all the movement is keeping it from getting better.
Seriously though, make a dr appt, and if need be get a REFERRAL to a specialist. This will help you get into a place covered by your insurance, provided you have any,