Is using toothpaste in my vagina good or bad?

Save it for ur teeth: I am unaware of any reason one might want to use toothpaste in that region of the body, but the abrasive nature of the toothpaste and other ingredients may irritate those tissues substantially. For whatever your reasoning, use a product formulated for that reason.

Other products: There are other products that are better suited for that.

NOT GOOD: Unless you have teeth and potential decay there, use products for their intended use. You have plenty of affordable products designed for intended use down there-- what ever it may be, if you have an infection down there, see your md asap!

Vaginal Health: Introducing foreign substances into the vagina can cause harm. Toothpaste does not belong in the vagina.