Breathing problem
I'm diabetic (h1bac 7.4) and taking treatment. At time once in while I used to have breathing problem and got tested with treadmill and other tests and all come normal. I take Esiflow 250 inhaler 2-3 puffs and it becomes normal. From recent time I'm having this frequently specially when I wake up in the morning and/or in the evening time. Esiflow 250 still works but now it's frequent almost once in two days. Day time no issues only majority morning time and in the evening. Please suggest what should I do. Thanks