Hi.. Thanks for the query.. As per the symptoms you have swelling and inflammation of the Incisive Papillae that is a triangular structure present at the back of the upper front teeth.. It commonly gets inflamed due to causes like trauma to Incisive Papillae caused by biting something very hard, burning with hot foods or chemicals, a habit of placing the tongue against the Papillae, tooth or gum related Infection in the respective area.. In case if it is appearing to have pulled away from its place then it can be most probably due to traumatic injury to it.. Do not worry s gradually as it will heal it will become firm.. Nothing to worry as it will get resolved soon.. As of now you can apply Lidocaine jelly over it.. Take anti-inflammatory painkillers like Ibuprofen.. Suck ice pops.. Avoid hot, spicy and hard foods.. You can also rinse with cold water and do warm saline gargles for reducing inflammation.. In case of it does not get better in 3-4 days then an x ray has to be done under supervision of a Dentist.. Hope this helps.. Regards..