In class yesterday, and my partner we and I were going over our standing guillotine. On one, he must have gotten a little too tight or used the forearm too much, because the left side/front of my trachea kinda hurts today. A little hard to swallow. I can find the spot with my thumb that is a little tender. Thinking about icing it down after work, will that do anything? Anything else I should try? THANKS!