Drip down symptoms and conditions

i got a bad sinus infection for the past month after starting lisinopril, on many meds for this, i switched from avapro to lisinopril as i wanted to join the walgreens plan for cheaper drugs, the doc put me on lisinopril instead after i sent him the walgreens list of available drugs that they use, the avapro was not on the list,, ive been to my ent and allergy doc for this sinuse thing that is well over a month now and getting better, but i have spent more $ for drugs to combat this infection that r not on the walgreens list over $300 spent out of pocket but with a discount for switching to the lisinopril from the avapro that ive been on for about a yr,, it was not worth it,, BUT my cardio doctor thinks it ws just a coincidence that i got the sinus infection about the same week that i started lisinopril, he asked me to tell my ent and allergy doc about this, the ent thinks i shld go back to the avapro if ii feel that it may have started the infection with the little cough, i have not talked to my allergy doc about it yet, has anyone felt they got these symptoms with lisinopril????? i am still taking it all thru this sinus thing, MRI and 2 inhalers and antibiotics, narcotic cough med, sinus wash and musilex r doing ok and on the mend, i have no other symptoms and on the 5 mg , what do u all think? and anyone else have a sinus thing going on when starting the lisinopril??? D.