A sharp pain is what you felt. You were hit by one of Ryker's men's arrows while on a rescue mission to save Stormfly and the other riders with Snotlout and Hiccup.

It had hit you in the stomach. You reached down to feel the warm liquid as you fell off your dragon, heading for the water below. Your dragon panicked heading down to catch you but they were hit by a dragon root arrow before they could reach you..

You had no clue where Hiccup and Snotlout were.

You could only hear the rushing wind and water. When you hit the water, it engulfed you. Everything was muffled and dark. The cold salty water filling your lungs, it hurt..