I'm a 39 year old married female. I had a mild UTI infection last month which was cured with antibiotics and soon after I had a root canal for one of my molars. After the root canal sitting my gland swelled in the neck and I had pain. Dentist gave me antibiotics and anti-inflammatory capsules which worked for 3 days. Post my recent sittings I've noticed that my glands in the neck have slightly swollen and are tender along with tenderness under both armpits. There's no lump but pain.