people will probably start to get fed up with me posting about this, i am if im honest lol but its still there after months

I do have asthma or so im told, my peak flow is really good and is pretty much always the same, blood pressure and oxygen levels also good. I have even started going to the gym and doing yoga and tai chi

but my throat still feels sore and tight and like i cant get that full breath. I am a fair bit over weight as this is the heaviest i have been. 30yr old male 6ft1 in height and 19.4st and thats around 265 pounds. Poor diet and poor sleeping habbits

Any advice and input will be greatly received

Thank you