Welcome
No idea about the tingling in your face, but have not heard of it as a location for diabetic neuropathy, best ask your doctor.

As for adding back carbs, that's where having a BG meter comes in handy. Test various foods, amounts of carbs and combinations of foods in a meal to see what your body can handle. http://www.wheatbellyblog.com/2014/...ool-fingertips/

Have you found the Diabetes forum? http://forum.lowcarber.org/forumdisplay.php?f=45
Good resources for LC diabetes info there.

All the best,