clomid and pcos

Laura

I have taken a couple rounds of clomid however this month i am not pregnant and didnt get my period...this means i have to take the progesterone again to bring it on to start the clomid again...when i took it at age 29 i never had to restart progesterone just did it once and clomid brought on a period every month...has anyone had this happen? i am on 150mg clomid. Also last time i got pregnant i was on 2000mg of metformin...what do you all think?