I have had swollen gums across the top of my mouth and swollen lymph node on the left side for a couple days! no fever or anything! what is this?

Gingivitis ?: That's the first guess; periodontitis or a tooth abscess would be a second and third guess. But you want a definite answer.. for that, make an appointment with a local dentist who can examine you and advise you of your treatment options.

See your dentist: asap for an examination. You may need referred to a specialist.

Gum disease: A swollen gums can be a sign that you are at risk for, or already have, gum disease. Call your dentist today for exam x-rays and treatment. Good luck.