Another failed month

Well after my first round of clomid AF has shown up. We’ve been trying since our mc in 2016 and nothing. Was recently told I have PCOS and just feel like a total failure. My BF is due soon with her 2nd baby and as much as I want to be excited I know when I see her baby it’s going to break me. My husband keeps telling me to be happy for those who are having their babies but it hurts to know we haven’t gotten our rainbow yet. I am starting to lose hope especially when constantly being asked when are we having kids. 😔