Tenderness and "bruising" under my eye (eyebag area) No trauma. It's red and swollen and a little warm. What could this be? There's a little bump also.

A stye. These could be the beginning of a stye or chalazion, which are caused by a blocked oil duct in the eyelid. Use a warm compress to encourage drainage tonight, but make an appointment to see your ophthalmologist as well. Sometimes this condition needs treatment with eye drops, eye ointment, or even oral antibiotics. .