There is heavy deposits of plaque and calculus in your lower teeth.get a thorough cleaning done by a dentist at the earliest. To relieve pain and gum infection, you can consult through this for prescription of medication.

Hii..Pain is because of tartar deposition around the teeth. There is too much of tartar surrounding your teeth & gums that is causing infection in your gums & your teeth will fall if not treated. It is looking like pyorrhoea, this can be because of medications, poor oral hygiene. Get checkup & full mouth x ray done. According to that get the treatment done as soon as possible.