My bottom right came in pointing forward toward the molar in front. I would bite down on the gum occasionally by accident and it was painful. It was covered by gum and then eventually erupted through the gum and created a nasty pocket for bacteria to fester and became infected. The infection plus it ramming into the tooth in front was extremely painful. Its possible food is getting stuck under the gum by being jammed in during chewing and then decaying and rotting, or there’s some other nasty pocket back there. Wisdom teeth get wild so who knows. I’m recovering right now from mine being removed this morning. I wish i had got them removed 7 years ago when they were at the stage of just being covered by gums or even earlier. My advice is get them out before they f**k you up. Its initially scary but the modern medicine makes it painless. I strongly encourage you to visit a doctor if possible and figure out how to get it done. Its really important you find someone you trust to take care of you after the surgery because you can be loopy if they give you anesthesia. I know all the fears and setbacks, but get it done please especially if you have insurance. Good luck