Tongue Problems - Need Help - Please

I have a quick question for members on the forum and would appreciate your response.

A few weeks back, I seem to get a feeling that my tongue was "cut", it looked bumpy from couple of places. I dont take any medicine, but was going through a period of high annxiety/stress. Dint get anything in my mouth, lips or cheeks. At the same time I was having some burning/pain like sensation that extended from my thoart and went all the way down till where my throat ends. It was worse sometime and OK at other times. This too went away on its own after some time and the tongue also felt better in a couple of days.

I am wondering if someone can tell me what could be going on? what is the medical  

What is worrying me now is that the tongue seems badly "cut" again (near the tip of the tongue) from 2 places (close to each other). I got some burning like pain for sometime but felt OK other times. I looked at my tongue and there is a very mild white coating that is not coming off. It seems worse towards the end of the tongue. I can also see some bumps. Despite all this I dont have any canker sores in my mouth or any other symptoms anwhere. Its been more than 2 weeks and the cuts dont seem to be getting better. I was wondering if someone can help and let me know what is going on. I cant seem to find a good source to solve this.

Is this Thrush?
Are there any tongue issues related to stress