My 5 mth old has recently been teething and now has his 2 bottom teeth (teeth are through the gum but not out all the way). Now I'm having some nipple pain, especially on the right side. When he latches, I can feel the teeth rubbing against the side of the nipple and it's become quite sore. I thought that the tongue should cover the teeth so they don't touch the breast, but that hasn't been the case, especially on the one side. Any advice?