It's more common than you think! I had to learn on my own while breastfeeding that some babies may just want breast milk or formula instead of food. I mean could you imagine having a toothache and trying to chew at the same time, ugh! There are ways to soothe the teething depending on the age. My little one will be one years old soon and I give her fresh fruit/frozen fruit in the fresh food feeder, and tiny pieces of ice, and many other things! Just do what works for your baby! Good luck!