hello

Hello i have a question maybe someone can help me. i do not know if its normal or not or if anyone else has it, but on the back of my tongue i have a yellow coating. its not a lot but you could probably realize it if you saw it. it doesn't hurt or anything but im guessing it might smell or have some odor. i can scrape it off and it doesn't hurt or burn or anything but it does come back right away, and it also doesnt bleed or anything. Also the front of my tongue has a light white coating. idk if its really a big deal or not or if its even that noticeable but since i have been looking at my tongue i noticed it. I've looked up pictures of oral thrush and none of them really look like it some do but idk it isnt anywhere on the sides of my cheeks or back of my throat or anything just on my tongue. any thoughts of if its just normal and not a problem or do you think it is some kind of oral thrush or something? thank you