Pins & needles in Tongue?!

Lo • Jesus is the Way, the Truth and the Life :)
Has anyone else got this strange symptom? Has happened to me about 8 or 9 times now in the past month, every time it happens, it's just after I eat (but not every time I eat). Lasts for about 15-20 minutes each time. It's horrible - such a weird, uncomfortable feeling. Sometimes it's right to the back of my tongue too. Just wondering if anyone else has had this or heard of it?