I am 47f, i had a toothache 2 wks. ago, maxillary cuspid pain is gone but knot the size of a lg. pea almost feels as hard as another tooth above gum closer to nose. swollen and sensitive and lots of drainage lately. is this dangerous? and moody

Yes: This could be several things and most likely is a dental abscess these can lead to serious sinus infections and rarely brain infections.You need to be seen by the dentist as soon as possible, Generally within 24 hours to make accurate diagnosis and treatment.

Abscessed tooth: May very well be a tooth infection, an abscessed tooth. The knot you feel is where the infection is centered. You need immediate emergency treatment. This can't be fixed with observation, pills, or other peripherals. Please, you need to see a Dentist before the infection spreads to other organ systems. Hands-on Treatment is required.