I've been having some chest pain recently, like a sharp sting right in the center and to the sides. Finished my TB treatment about a year ago, and it's been 9 months since that. Did some tests like sputum, CBNAT, and X-rays; all came back clear. But for the past couple of months, I've had this mucus issue. No coughing really, but if I try to irritate it, some white mucus comes out. Do you think it's possible for TB to be coming back, or could it be something else?