I am worried that my brain may be leaking CSF.  About a year and a half ago, I laid down on my bed, and when my head hit the pillow, I got this strange sensation, like when you accidentally get water in your nose while swimming; and this clear, almost tear-like fluid began dripping out of my nose, like my nose was crying or something.  And it dripped maybe, 5-10 times, then stopped, and my nose dried up like normal, and it didn't happen when I put my head on the pillow again.  This happens quite frequently, about once every two weeks... If I put my head down in a certain position, my nose starts dripping this clear fluid.  I don't recall any head trauma that I may have experienced, I haven't gone through any kind of surgery or anything, so I just passed it off as sinuses (though I have never had any sinus problems in my life before, and this fluid seems to pour from my nose when I cry) And I didn't think anything of it until I found something about CSF and possiblities that the brain fluid leaks.  I want to know if this is an actual leak, and what I need to do to take care of it, where I need to go, or if it is just sinuses, and I can stop worrying.