My mystery Mayan, Aztec, or other fertility statue.

I found this at a sale in Hawaii, many world travelers choose this beautiful island as their final place of rest. Anything not obviously valuable can be had for great prices. I have found little to know information on this piece. I assume it's some sort of fertility piece. I would love to solve the mystery of this wonderful piece that resides on my mantle. It's roughly 8 inches long by 6 inches high. I'd also like to know if it's authentic or a museum repro. Thanks for all your help.