Feel like giving up

I had a miscarriage in June of this year. My haunted and I still have been trying it took us over a year to get pregnant with number 2 then like I said I had a miscarriage. I honestly feel like it’s never gonna happen again. My little girl wants a brother or sister so bad. It breaks my heart that it hasn’t happened yet :(. I just feel like no matter what I do it’s not gonna happen. I just feel really down every time I get my period. It’s like I go the this cycle each time.