Yawning & breathlessness. I consult now.

Hello doctor i gets excessive yawnings in between & feels like breathlessness. When I'm Burping i feels little better. What do u think this problem will be related too? This problem is happening since last year. Now i notice that whenever i get toilet & stomach gets empty it occurs. Last year We took consultant of pulmonologist, ENT & Allgeriest/Immunologist too. She is having Allergy problem, but Allgerist said breathlessness is not related to this. I'm tired from last year by taking medicines. No1 is getting the exact Cause of this problem. pulmonologist gave her Sycobreath Foracort 200 inhaler it don't give Relief. Montair LC, Mountair Fx Tablet also didn't worked. We did Chest Xray that is Normal. IgE test showed 558 IgE Level. CBC test are normal. Other thing i noticed when yawning comes i checked my oxygen saturation that shos Spo2 98. Heart rate are in Normal range. I am tired by doing this all treatment. Pls pls help me in this matter. which specialist should i consult now.