Me and my 2 year old son were visiting a friends house when it happen.Just as we were leaving out the front door the front doorway floor gave way.I fell about 5-6 feet,I hurt my right shoulder,side,leg.My son about 2 feet hit his face and was bleeding from his mouth,right nostrils.The home is being rented by my friend,and they are not the owners.To my knowledge my friend doesn't have renter's insurance.What can I do?