Contact your state's health dept. and ask about programs for those who have no insurance, so that you can hopefully get Medicaid, or an afforadable plan of some sort for the future.
For this issue, unless you can live with it (I wouldn't be able!), I'd go to the E.R. of whichever hospital in your city tends to deal most with the uninsured folks and ask to be seen. Tell them you'll work out a payment plan for the bill. Then, just pay what you can afford toward the bill each month... what else can you do? Hopefully, you won't need surgery, but it would be good to get a diagnosis....
You deserve medical care... I have lived without insurance, too, and it feels horrible knowing that you have to live with problems, or pay huge bills, or risk losing all of your savings, while other people get free healthcare... we should all have access to low-cost healthcare.
PS: Ask around... there might also be a lower cost walk-in clinic that would charge less that the E.R.