I'm having trouble with shortness of breath at night and it's been really bothering me. I visited a pulmonologist who had me do tests like ECG, CBP, PFT, and a chest X-ray, but everything came back normal. They prescribed Montair FX, Nexito Plus, and esomeprazole for a month, which made me feel better. But now, two months later, the symptoms have come back. My doctor said to keep taking Montair FX every night. What should I do? It's frustrating and I'm worried about what's happening.