Check out the post below....it's one of PTree's VERY informative posts on Endometriosis. It'll give you lots of pointers! You're headed in the right direction already (cleanses) - so that's good.
I've never heard, so far, of people passing worms and critters from their vagina! That would be pretty yuk! So far so good. It's the other end that seems to store all the goodies. (Oh I'm laughing now - I think it's bedtime!)