It sounds like you are getting a thorough assessment done. I have some symptoms similar to yours, but have not been evaluated for a CSF leak. After my car accident, my CT showed that there was fluid in the sinus cavity. It was attributed to sinusitis, which I have never had before. I had fluid leaking out of my left nostril. This stopped after a few months, but I still have congested sinuses, and can feel fluid dripping down the back of my throat. I also have issues with my left ear. It feels like there is fluid in the eustachian tube as well, and I have constant pain in that ear. Hope you determine what your problem is, and that you get better soon. Good luck with your tests.