Heartbroken..

I will never understand.. How is it some people get pregnant with a blink of an eye and I and others on here can't?! I've never had a positive pregnancy test. But I've miscarried. It's so discouraging and heartbreaking to get on social media and see all my friends, family, etc having babies! Cause its not that easy for me.. I try my best to be so happy for them but in the inside I'm dying.. I would LOVE to start a family with my husband and he really wants one too. I just don't understand... Please send baby dust my way!!!