It seems that when my IBS is playing up, my chance of having spontaneous nosebleeds also increased. For example, i just had one. I was just sat on the sofa drinking my tea when my nose starts to bleed for no reason. I'm trying to work out if it's connected to my IBS or if I should ask the GP about it. It wakes me up in the middle of the night sometimes, it has started in the middle of a shop and even twice when I was driving on the motorway!