Why me?

I honestly don't know what I'm having a hard time getting pregnant. NONE of my Aunts nor my mom had a hard time getting pregnant, so why would I?  And also I don't have a family health issue that I am aware of. I just think it's so weird and sometimes they ask me why cant I get pregnant if the got pregnant easily. All I say is I don't know. It's heartbreaking but it is what it is 😢😔😒