Hi Doctor, I noticed that I have an enlarged, white taste bud on the side of my tongue. I wear a nightguard at night, and at first thought that maybe I'd bit my tongue, but after several nights sleeping without a nightguard, it has not gone away. I've tried a mouthwash with salt water, and eating ice chips for the swelling, but to no avail. I haven't eaten any spicy food and have not burnt my tongue with hot tea. The only thing I have changed recently is my toothpaste brand. Could my tongue be irritated by something in the toothpaste, or do I have thrush? Thanks, Sue