Clomid???

I had two blood tests done, when I was suppose to ovulate last month and this month and my progesterone stayed the same 1.7 extremely low. The 15th of this month I’m suppose to get my period and start taking clomid , I’m excited but nervous at the same time. Anyone else that’s taken it or been successful? Anything you did also to prepare your body while taking it? Vitamins, preseed etc.