your history is incomplete, you had written that you got an abscess
removed, what was the etiology of that abscess and how it is removed. does that involved the adjoining tooth. normally if there is a pressure sensation and pus discharge from the area above the gum margin, it is because of the abscess from the tooth and the infection from the root tip is draining out through gums.
upper front teeth are very close to the nasal floor, it may be the possibility that the infection has perforated the nasal floor and discharge mixed with blood is coming out of nasal cavity
meet a good dentist
and get it resolved soon.