My toddler 21/2 was sitting on the end of our bed while I cleaning up the bedroom. He fell and got tangled up in the designs of the bed and he says he Urts. ( hurts ) he walks and his knee looks like it gives out and he will fall over. He isn't crying or anything just when that happens he will whine and say hurt. I hate to waste the ER's time over nothing but I don't want him to actually have something wrong. Would they do anything for a sprain i couldn't do at home?