prevera and clomid Q's

Victoria
Is anybody on Clomid and Prevera? I called my dr's nurse about prescribing something to jumpstart my period since I have PCOS. She said she would talk the the Dr and call me back. Well she never called me back but I got a call from my pharmacy to pick up my script. 
I haven't picked it up yet, but Any instructions on how to take? Do I take it to induce period then take clomid as usual or wait till next cycle to start clomid?
Thanks!