Many years ago I had the same thing happen to me. I was going to the dentist every six months and brushing correctly.

I nearly lost my two bottom teeth right in front because the dentist wasn't doing his job. I had to have the gums cut back in my entire mouth ---at great expense and pain.

Get to a dentist right away. He/she can help with the pain and fix it so you don't lose any teeth. The health of your teeth has a direct effect on your entire health, even to heart problems. (And this is true also of your pets.)