Acid reflux. Right direction doctors.

Hello everyone , hope you all keeping well . Honestly I am grateful for this platform and for you expertise to help us out in this tough situation by giving guidance. I have been having this shortness of breath and this sensation of a lump in a throat which I feel like clearing out even if there isn't any since the past four months , I have no issues with breathing when I am sleeping or lay down only when I get up or sit . I have consulted my family doctor, pulmonologist and ent thinking it might be their course but all of them stated that it is GERD which is my issue . Did all my X-rays scans for lungs , MRI and all came out to be fine . Since then I was prescribed Pantocid 40 mg for a month and a diet to follow , I feel a lot better then before but it keeps coming and going now rather then staying all the time it's been a month and I stopped taking the tablets . I don't understand what am I doing wrong . Please guide me in the right direction doctors .