Hard Bump on Babies Head

My 2 month old has a hard bump on the top of his head. It's so hard it kinda feels like bone. Its farther back behind the soft spot and to his right. Pretty much right where his hair parts. The bump doesnt bother him at all when you push on it. It doesnt move around under the skin either. Hes had it at least since he was 2 weeks old when I noticed it. He could have had it for longer. It doesnt seem to have gotten any bigger. He never bumped his head and far as I know. It isnt bruised or red or discolored. Its just a bump. Has anyone else had a baby with a really hard lump like this before? What was it?

It was a rough labor with him. I was pushing for 5 hours just to have a csection because he got stuck. His head was wedged in my pelvic opening and was too big to fit. I read that that all that pushing and pressure on his head could cause a bump, but I didnt think itd be a hard bump like this is.

We have discussed it with the pediatrician. She doesnt know what it is either. We are monitoring it for the time being. I am just looking for some insight from others with the same issue because the whole "wait-and-see" thing makes me anxious. Of course I googled it too and read the worst possible case scenarios so that hasnt helped my anxiety over it.