Best and free fertility reading??

I know we're almost into 2018, but does anyone know of a free and accurate site or app to get a fertility reading? I used the Yodha app about 2 weeks ago and it predicted January, and that if that wasn't my month, then April would be. I went to Cedric's site and he has yet to give me a fertility reading, although what he told me that he gathered about me -- it was spot on. However, he made me feel uncomfortable. Whether or not he actually was sending me emails, he started to sound pushy and persistent.