Who knows as lot about organs and health? I have a sharp pain at the very bottom of my left rib. Why?

It hurts once every month and it is not my ribs that hurt, it’s at the bottom.
It has been happening for 2 yrs. All of the sudden it just hits me and it feels like someone sticking a knife in me and twisting it. Sometimes it hurts more than other times. One time I fell down cause it hurt so bad. By the way I am 14 in 1 months I will be 15 if that helps

A48-year-old male presents with an 8-day history of productive cough, subjective fevers, and malaise. he is otherwise healthy without any active medical problems. he is a social drinker of alcohol, and denies any tobacco or drug use. on physical examination, the patient is alert and oriented. his temperature is 100.4 0 f, pulse rate is 56, respiratory rate is 18, and blood pressure is 133/64. heent is within normal limits and a chest exam has diffuse expiratory wheeze with decreased sounds to the right lower lung fields. blood labs reveal wbc 14.4, hgb 11.3, plt 233, alt 65, ast 102, and po 4 2.1. a chest x-ray reveals a dense consolidation with bulging fissures. based on these findings, what is the most likely pathogen affecting this patient?