New to oil pulling-what kind should I use?

I have a dental appointment next Friday, I know I have gum disease based on bleeding gums, irritation and it looks like my gums have receded. I am hoping to treat this in an alternative way.
My question is how do I know what kind of oil to start using? I have also seen in posts that I should stop commercial toothpaste. What do people recommend that I start using? I would appreciate everyone's help!