How many of you get ringing or hissing in your ear on your CH side when in a cycle. 

Cheers, Hoppy.

I get it sometimes, but not consistently. It could be unrelated or could be secondary from me smacking my ear.

I do get an odd sensation just (3sec to 2min) before the attack ramps up. It feels like a rubber band is stretched across my brow-bone/forehead and attached at either end to my temples. It grows increasingly tighter, but not very painful, until just before the attack when it feels like it releases in a snap from the opposite side from the attack and burrows into my temple like an earthworm on the side of the attack. A few seconds to a couple minutes later, the attack is full blown.