Hi mam....   It is the wisdom teeth(Third molar)... Wisdom teeth is the teeth that fails to erupts in its normal position in the given period of time.... The swollen gums around the wisdom teeth is medically called as PERICORONITIS ... Your picture shows your teeth is partially erupting.... Complications of wisdom teeth: **Dental crowding **pericoronitis **cyst formation **Difficulty in mouth opening **Jaw soreness **Difficulty in chewing **caries and eeosion of nearby teeth   First and foremost x_ray(OPG) should be done  to identify its position within the bone...

Pain will be there untill it erupts completely. As the picture shows, your wisdom tooth is growing in straight direction but, it is not growing in alignment of other teeth i.e in the line of all other teeth, rather more towards the cheek. This will definitely cause you cheek bite in future. This needs to be extracted. Do visit your dentist. He’ll take an OPG and remove it. More over I can see the same situation occurring for lower right wisdom tooth in future. Get treated in time.