Back home from hospital, at first it was suspected a punctured lung due to the burning and difficulties breathing. Appears not, its only turn musculature, bloodletting inside it and cracked ribs (not fractured)
Therefore , the solution is to go home and take some painkillers. Well, got it x-rayed and checked out. At least something, though now its an interesting experience to move my left arm.
I'm so happy.
Update:
Yes, it was in the dojo, were doing softening-up moves and rollovers, when my body was supposed to flex, it didn't. It went