Hi. Welcome to Healthcaremagic. I read your query. Since you had fever, this can lead to inflamed tonsils, lymph nodes and gums. It is temporary though and comes down in a week or two. Swollen gums can also be due to medications you took. Just maintain good oral hygiene. There should not be plaque and calculus. Do warm saline rinses. Maintain good diet. Take multivitamin and minerals, specially vitamin C, A. Massage your gums with gum paint for good blood supply. If swelling persists or worsen, please visit dentist and get it checked. Get oral prophylaxis, blood test. Hope the answer helps you. Thank you.