Hello! I have one question for you. Since I know about my self, I have allergies, and sort of bacteries in my nose and in my throat. I use Flexinase for my allergy (I spray in my nose), and I think my allergy is gone, but why my nose gets choked when my head is on lower altitude (When I sleep I must put something behind my head, to rise the altitude and everything is alright)? Thank you.