Why would i have a popping noise coming from my nose? at times its in sync with my pulse and sounds like a clock ticking. others can hear it too.

Nose Popping: A more common reason for nose popping would be at the junction of the cartiledge and nasal bone- essentially bridge of nose. If you do notice this sound and others can hear it would be some type of polyp or other abnormality pressing against a blood vessel or the vessel expanding and pressing against nasal structure. I would recommend being seen.