I had fillings placed in a few years ago. My top back tooth (second tooth in the back) filling came out and months later one side of the tooth came out leaving a little corner of a broken down tooth still intact. The other side of the tooth is still in tack but I can tell its a little shaky. Since then it feels as if a part of my gum has a bubble on it and it feels as if its pushing through the open, broken tooth. I have been to the er for pain and they prescribed me Penicillin vk about three weeks ago. I am not in as much pain but Im starting to smell a funny smell from that side of my mouth.