Nasonex and adverse reaction

Wow, that's all I can say. I started suffering with allergies pretty bad this March. Terrible headaches and ended up with two sinus infections. My doctor, after doing a sinus x-ray, sent me to an allergist who did a scratch test and a needle prick test with 28 shots. I am allergic to dust, dust mites, some trees and cats. He said that I should just do Mucinex and Nasonex. I've been noticing that my pulse rate is up and flutters. I wasn't sure what would cause that. I monitor my bp pretty regularly since having to get off of bp medicine due to a severe adverse reaction from that. I just assumed I was going to have to go back on bp med to control rapid pulse even thought the bp was in the normal range. This whole medicine thing is maddening. I am going to try and not take it tomorrow and see what happens. The weird thing is I use the Nasonex in the morning but the rapid pulse doesn't show up until the evening. Could Nasonex still be the cause??