I've had this stabbing pain right in the middle of my chest that I've been dealing with since I woke up one morning. It feels sharp, especially when I inhale deeply, sneeze, or put any pressure on my chest. I tried taking pain relievers and some NSAIDs, and after about a week, the pain mostly went away, but I still feel it when I move or squeeze my chest too much. It's been 3 months since then, and the day after this pain started, I caught influenza. I did visit a general doctor, but they said it might be from the flu or just because I slept wrong and put too much pressure on my chest. I'm really worried about what this could be. Could it actually be something more serious?

do chest xray. take one pain killer