Nose Bleed again

Yesterday, I woke and blew my nose as I usually do. Again I had a nose bleed. I trained on Saturday and Sunday for the mini marathon. This time the nose bleed lasted about 2 hours. I held my nose between my knees, pinching it close for maybe five minutes. I placed a cold rag on my face. I then just stuffed both nostrils with cotton. I had work to do and could not be stopped by a nose bleed. I worked for about and hour. Then on my out for work, I took to cotton out and still my nose bled. I wiped my face and put more cotton in, but this time just my left nostril . Then I was off to work. I kept the cotton in for about two hours and work and it had stopped.