After I have my son as a method of contraceptive

I'm not sure I understand the question. As long as you are fertile, you'll have periods. Some types of pill can make your period much lighter, but that's it.

I wanted to get my period stop so that way I don't ovulate and cannot get pregnant again at least not until I am ready again I wanted to know if there is something I can take

You need some form of hormonal birth control. Talk to your doctor. There's nothing you can buy over the counter which will do what you want.

Even with the pills that suppress ovulation, you will have a small bleed every month.