when is it safe to take Maca Root?

So I'm on Vitex right now and have been on it for the last week or so. I was temping bbt for the first time this month and pretty sure I didn't ovulate. So I went right out and got the vitex. I'm thinking if starting on Maca too, but I'm getting conflicting ideas about when it is safe. Some things say it's a food and safe to take all through pregnancy. Some say not to take it if you're pregnant and that you should stop after ovulating in case you do conceive. So which is it? Please help.