I'm 23 years old and really overweight. Going to see my doctor to...

I'm 23 years old and really overweight. Going to see my doctor today because, I have constant itchy feeling in my throat like something is there but its not. I feel like gagging/throwing up all the time now, at first I thought it was just asthma, but talked to someone else taking lisinopril told me about the dry cough, so im pretty sure this is the problem. I don't see how anyone could keep taking this once you get these side effects. It's just a constant battle trying ignore the feeling in my throat, and trying to sleep is rough now,I wake up sometimes feeling like im choking. itchy throat,nausea,dry cough,hard time sleeping and gagging. Thanks for all of your input really helps, so I figured I'd let you in on how its making me feel, or so I hope its the problem lol