Has anyone here had a really bad nose bleed associated with a sinus infection?

Yesterday, I had a terrible nose bleed, this was before I found out about my sinus infection. It started out when I was driving to work and I kept tasting blood in the back of my mouth. Once I got to work, I had to blow my nose, and when I did, blood clots and tons of blood came gushing out! It freaked me out! Anyway, it kept bleeding for about 30 minutes. I had such a bad headache through all of this. I had my fiance' come and pick me up to take me to the emergency room since the bleeding was still happening and they told me I had a sinus infection. We have a humidifier in our bedroom, but it has only kicked on a few times since we have had it. I am not sure, but I would blame the nose bleed partially on the dryness of the air.