A few days ago Lettie started gagging randomly. It really does seem to be random. It’s indoors/outdoors. Sometimes she will gag 4 times in one hour then go for 4, 8, 16 hours without doing it. She doesn’t throw up when she does it either. I have checked her teeth and used my finger to swipe around the back of her mouth and throat, thinking she might have one of my hairs or something back there. I didn’t find anything. Any ideas?