caught my son masturbating

i walked in on my son masturbating. the thing that unnerves me is that is videos of women giving birth and breastfeeding . should i say or do anything and is this normal?

Trying confronting him about it. but its upto you at the end of the day. its your call.

It is natural - give him some privacy

I agree it's natural. Giving him privacy is the way to go.

As a mum of 4 boys, my advice would be to leave him to it. It's completely normal for him - and girls, as I will be telling my daughter if she does it.
I would mention to the child that it is only ok in his/her room and is not acceptable to do this anywhere else.
I hope all goes well.