Something about your 30's must make your more prone to injury. I've been training hard in contact martial arts since I was 7, with tons of throwing and break falling, joint locks, etc. No major injuries. Ever.
But in the last 6 months, I've dealt with bruised ribs, a hyper flexion of the neck (similar to whiplash) and was finally feeling 100 percent. My goal for 2013 was no injuries.
So of course... last night, at the start of my turn for situationals (10 minutes of me in guard trying to sweep or submit rotating opponents) the very first guy I hit armbar from guard, he stacks, I spin under, grab pant leg, roll to finish- and somehow he lands right on my thumb. It pops backward and touches the top of my arm.
Its sprained at least, waiting a few more days to see if it feels better or get it checked out for a torn tendon or ligament.
Beyond pissed / frustrated.