I think you need to see a doctor about it, sooner rather than later. I'd also suggest seeing a podiatrist.
I mentioned my feet problems to my GP after my last appointment with my podiatrist (who I see because of an accident a couple of years ago). My GP has referred me to the diabetic foor clinic as a resut.
By nerves I assume you mean neuropathy. Some poeple have reveresed problems with diabetic neuropathy by gaining better control. There are specific medications that can deal with neuropathic pain. Not all nerve pain is related to diabetes, so it reallty is worth geting a referral to the diabetic clinic to make sure.