Duration of Pain in pleural tuberculosis

Hi, I was diagnosed with tuberculosis two months back when I had high fever and extreme pain in the chest. I underwent x ray, diagnostic fluid aspiration and CT. I started on the medication and my fever subsided. My pain also reduced in intensity. However, I still have pain in every breath. Is this normal to have pain even after 2.5 months? I saw the doctor on my last monthly visit and he said it happens when fluid is drying up. But I just want to understand if this much pain is normal at this point during the treatment! Any idea when I can expect it to go? I am a fitness freak and have always eaten well and healthy and have never smoked in life. In fact I am malnourished in no way.  Is tb purely infection based? Any idea how I can prevent such diseases in future despite all that I had been doing already because this problem has been a major speed brake. Thanks