Swollen and Sore Tongue

I didn't think about mentioning my tongue. Around the 4th of July I thought I burnt my tongue although I could not remember and instance it would have happened, but after 3 weeks it still hurts and I cannot eat anything spicy or salty. Here is a photo of my tongue. See how the sides are indented from my teeth and although it's not a great pic, the front and sides are red, not like the rest of my tongue. It also is affecting my speech. I keep slurring words every now and then. Very frusterating. Maybe another clue to all this? Looking online it talks about hypothyroidism and I have other symptoms of that as well. I may go see a doc this week and bring it up as an option to see what they say....