Living in Hell From Lisinopril

So I was diagnosed with high blood pressure about three months ago and prescribed Lisinopril. I didn't realize but after about a couple of weeks I felt I was getting sinus drainage really bad. I have been taking it for about two months and I am to the point where I am going to an ENT to find out why I'm having such bad sinus drainage. I just pulled up this website and I am so relieved I finally found what my problem is. I am so going off this medication immediately. I can't sleep or go anywhere without being miserable and hoping I don't have a coughing attack and having to clear my throat in the bathroom somewhere in public. It's so annoying and I haven't had any sleep for two months from coughing all night long.