Unless you really can’t afford to take him to a Dr, I wouldn’t just wait & see.
Money is not the issue, neither for us, nor the boy’s parents. Very probably, the parents didn’t understand the seriousness. He was taken to a local clinic and, frankly, neither my hubs, nor I feel they did a thorough job. They did what any first aid provider would do.
The boys returned to us less than 12 hours ago. We just learned of this. The clinics were closing when the boy told us about his injury. We’re dealing as promptly and as efficiently as possible.
I realize that I don’t always have the latest and greatest information. That is why I asked the questions here. I appreciate all the advice given and will be following it.