I'm glad you went to the hospital. Internal injuries do not always show with bruises. I had my gall bladder pushed away from my liver when I was kicked a few years back. There was absolutely no pain or bruising, but I was severely bloated in my abdominal area due to having half a liter of blood in my abdomen and bruising to my liver. If the BO hadn't made me go to the hospital, I could have seriously hurt myself even worse. The same goes for you. Take it easy for a while. Your health is priority.
Strength is not defined by physical ability. It is determined by your actions and the compassion of your soul.