Why are the gums behind my bottom front teeth really sore?

Can't say: It is hard to diagnose it without additional examination or X-rays. This could be due either to dental caries, a severe gum infection, a cyst or other reasons. You really should go to see your dentist, it is time!

Sore gums: When was the last time you had your teeth cleaned.? Calculus or tarter build up can cause swelling and bleeding gums. There are also other causes such as decay. So start with a dental exam

Sore gums: Many possibilities for sore gums, although most often it's related to periodontal (gum) problems or irritation from impacted food or calculus. See your dentist asap to determine cause rather than waiting until you have a bigger problem.

Examination: Answering your question will require a hands-on examination. It may be from trauma, a burn, or an infection. Most probable cause, however, is periodontal (gum) disease. Please make an appointment to see your Dentist to help you start the healing process.