Hey, for 2 days now i have had this sharp "stabbing" pain in my lower left rib area, the pain is always there but it doesn't really hurt unless i breath in deep or exhale out hard.

If i take a full breathe and hold it in, the pain gets pretty bad, makes smoking really irritating.

Im 20 years old, had pneumonia once, and rheumatic fever when i was younger.

Basically if i inhale or exhale too deep or fast, i get the feeling like theres a knife in my lower left rib cage area.