In the evening yesterday, I bent over to get my daughter out of her car seat, and watery fluid suddenly started running out my left nostril. It felt like a nose bleed, but it was yellow and watery. Later, when I bent over again, it started gushing out again. I haven t been sick or had any other symptoms or injuries. And it seems fine today (I have bent over and tried to recreate the issue, but nothing happens.) What was this? Should I be concerned?