Hello, Swollen gums along with thick substance discharge from the guns are clearly pointing towards gum infection that can be gingivitis or periodontitis. You should consult an oral physician and get evaluated. A panoramic x-ray should be done to see if the infection has progressed to the underlying bone or not. First of all, you should get a deep scaling or cleaning of teeth done followed by a course of antibiotics like Metronidazole and gargling with an antiseptic mouthwash. Also, massage the gums with chlorohexidine gel. Do warm saline gargles. Chew a vitamin c pellet daily. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Honey Arora