It seems like this is just a co-incidence to ovulate a day after Provera. Provera is a progesterone product and it is acting in your uterus only and would not trigger ovulation as such.
If Provera was prescribed to regulate periods but you have just ovulated, it would suggest that you don`t need Provera in this cycle. Please note however that this is just speculation response to the information you have provided and we would recommend that you should seek advice from the clincial who has prescribed Provera.