Hi, sounds like neuropathic pains. Tingling where you say. It can occur almost anywhere in the body but mostly the periphery, I get it in feet and hands. Very common in feet. Prolonged high glucose levels is the cause.
The tests will show this. Having diabetes is not good news, but at least you will know. It is a manageable disease. When you get glucose levels under control, within a few weeks, symptoms should improve.
There should be lots of information and support for you from gp and diabetes nurse.
Please don't worry yourself. Have you Googled diabetes. There are many sites that provide as much information as you can take.
Try Diabetes UK.
Good luck.