The top of the shunt or as I call it the bump on the top of my head is hard is that normal?

If you are not an infant anymore, yes its normal. How old are you? If it wasn't hard you would be in trouble.

I'm 24 had the uv shunt since I was 6 months old also sometimes I notice when I push on it it is soft is that also normal and I eperiance bad migraine like headaches from time to time...