Maca - fertility herbs and contraception - is it safe?

I have been recommended by a friend to take Maca - a Peruvian herb that acts as an adaptagen - for a range of problems including thinning hair and low energy (I currently already take b6, fish oils and iron for these, but without much result).

However, I have read that Maca also increases fertility as it has a regulating effect on the body's hormones.

I currently have a mirena (progesterone) coil and do not want to get pregnant, but would like to take Maca for its other benefits.

Does anyone know whether taking herbs that balance hormones/increase fertility can have a detrimental effect if you are using hormonal-based contraception?

Thanks