ovacue?

Has anyone ever used ovacue? I want so badly to conceive naturally and my obgyn said she thinks its possible. I want to get the ovacue cause I have no idea when I ovulate. Ive tried opk and have spent so much money on them. I have very irregular periods and pcos. I havent had a period on my own without provera in like a year and a half. Im not even sure if I do ovulate. But cause im only 25 my ob is positive I can and will ovulate on my own. Is getting ovacue worth it? I just dont want to drop 300$ if its not going to help anything. Ofcourse if it does work itll be 100% completely worth it!