I am 22 and I am wondering if it is normal for my penis to touch my belly button when I have an erection?

Answer 1

Normal for an erection to point straight up, that is why it is called an erection. Vertical is the ideal angle for vaginal penetration, the vagina goes up into the female. Not horizontal. Don't push it down, that damages your penis. If it reaches the navel then you are good sized, dude.

Answer 2

or a big belly

Answer 3

That means you have a big dick