Tingly Tongue Sensation?!

Hi, My tongue has been feeling tingly (almost feels numb - even though it is not) for the past 3 - 4 months. This tingly feeling does not move nor does it present itself on any other part of my body. I am a smoker, but have recently quit as I believed smoking has caused this, but unfortunately the sensation is still present. Now the feeling on tinglyness increases when after I eat. So it seems that eating irritates it and smoking does. Im just wondering what this could be - I can recall the sensation appearing when a wisdom tooth started coming out. But if its nerve damage why does it worsen after eating? Its not painful - its more annoying then anything. I find that if I am not thinking about it I don't really notice it. PS: I suffer from OCD