well i do allot of swimming - i swim @ Havant and Waterlooville swimming club - and well there was the Chris Hunt Channel Challenge on saturday ( the one just gone ) and well when i swam down to the bottom of the deep end my head felt like is was going to pop ( like your ears pop when you take off on a plane ) my Jaw hurts when i move it up and down, and my cheek bones hurt, and im always having headaches - i have never felt like this before - i have booked a doctors appointment for the weekend, but i have a swimming competition on saturday and i want to feel brilliant - any ideas what this is, or what i should do other than see a doctor ?