Hi Johnny,
I've been using an Afrin-type spray for about 2 years. It's been almost 1 month since I've used any. While I was using it, sometimes I would get what I thought were panic attacks at night, so maybe it was a side effect of the spray. I've been using a lot of medicane to help with the congestion since I stopped using it, so even without the spray I'm kind of jittery. My advice would be to go see an ENT. I thought I could just stop using the spray by myself, but I was wrong. He gave me some oral steroids to take for 6 days and I've also been using Flonase and Astelin(antihistamine) and that combination seems to be helping a lot. Even if its not the spray causing the increase in your heart rate, you should still try to get off of the spray. It can permanently damage your nose. Good Luck!!