I was supposed to start my period last tuesday, but it didnt come and still hasnt. Last month was my first month of provera and clomid, but I've taken provera before and had 3 periods afterwards. How many cycle days can someone have? Today would be my 36th day. I'm supposed to call my gyno when i start my period so i can start my next round of clomid. Should i go ahead and call or wait a few days?