Dent Near The Crown Of Head. Depressed Skull Fracture?

I have a dent near the crown of my head- a little further back. It s kind of tender and I can feel that it s there even when I m not touching it. It s really freaking me out. Now, about a year ago I went to the doctor and while I was there I had him feel the area. He said it was within the norm of skull. However, i just recently remembered a blow to the head I took about 3.5 years ago. I was swimming and someone was jumping onto a floaty chair and there heel on their foot hit my head. Now, I can t recall exactly on my skull where this happened- so it could be completely un related. However, it did swell and give me a good size egg pretty quickly. I didn t throw up or pass out, there was no blood . But, now I m worried this could have been a depressed skull fracture and it may be putting pressure on my brain? Is this something my doctor would have been able to feel when he checked my skull? Thank you in advance.