Ladies, my son fell and hit the back of his head pretty hard about six months ago. At the time, I wa…

Ladies, my son fell and hit the back of his head pretty hard about six months ago. At the time, I watched him closely and asked him questions, but he didn't have any dizziness, nausea, or anything similar, so I didn't take him to the doctor. Everything seemed fine afterward... And now, recently, my son says that when he's playing and jumping around, he feels a dull ache or pain in the spot where he hit his head. I don't know why he didn't say anything sooner, but now I'm so scared that maybe the impact caused some kind of tumor... Oh, ladies, it's terrifying. We're going to the doctor on Monday.