So upset today!

I found out one of my friend is expecting again. I'm upset cause I still didn't get pregnant yet. I'm happy for her she having another addition to her family. I'm going to be to old to have one if it doesn't happen any time soon.Family and friends don't know we are having problems in our marriage. If they do they will tell me not to get pregnant till u fix your marriage. Is it me who has the problem that's why I can't get pregnant or is it my husband. I can't help being upset nothing going right in my life.