Hi.. Thanks for the query.` Bumps at the back of tongue are appearing to be due to inflamed Circumvallate Papillae and as it occurs due to some or the other form of infection like upper respiratory tract infection or tooth infection.. The circumvallate papillae are already large in size and can appear elevated.. However to confirm just get a clinical examination done by an Oral Physician.. For now you can do warm saline gargles and avoid spicy and hard foods.. Drink cool water.. For swollen upper gum you can get checked that whether it is tooth infection or gum infection and for this an x ray can be done.. For gum infection scaling and a course of antibiotics like Metronidazole and gum paint massage can help.. If there is tooth decay then Root canal treatment can be advised.. Hope this helps.. Regards..