Purity Rings...

I've been thinking about a purity ring alot lately.
I mean, I'm not a virgin, but I lost it to the wrong guy
and now I know that I dont want to make that mistake again
and I want to wait until I have found the right guy and I'm married.

But, I mean...is it stupid to wear a purity ring when you're not exactly pure?
I regret losing it and I'm not exactly religious.
I have been more so since I lost my nan, but I'm still kinda skeptical.
I kind of feel like a purity ring is something I need to do though.
Because I know my nan was not happy about who I lost it too...she down right hated him.

My sister isnt religious in any sense and well, shes kind of a player haha
but she was supportive when I told her I wanted a purity ring.
She knows that I am kind of not into sleeping around.

But yeah to the point...is it wrong to have a purity ring when you're not pure?