I can tell you that it will be even worse when little boom gets his graduation.
You will realize that it is the last time (unless you will have more children of course) and you become aware of the fact that time flies. It is the curse of all parents and a reason to cry openly!
I can believe it!! I felt so overwhelmed by it all! I got the fear about time running away. It really does make you realise how fleeting their little years are.