I often gag and cough and bring up a small amount of blood as a result from back in my throat. This happens usually just before bedtime. I also have been waking in the morning with nose bleeds when I blow first thing. Quite a bit of dried blood and solid snot comes up. I have seasonal allergies and take a Zyrtec daily for them. I also take a daily emeprazole for acid reflux issues. I just want to be sure the blood is a result of the sinuses and not my stomach issues.