The best advice I can give you is to go an see your doctor, and he can check to see if it's your sinuses or if it's something you need to be seen in ENT for. I sometimes had nose bleeds but because of being sent to ENT I found out that it was my sinuses and I was given a nasal spray, and they've been a lot better ever since. Please let us know how you get on and hopefully it will be something that can be easily explained. Many of us suffer sinus problems because of the raised pressure with IIH.