Why?!

Clare
AF rose her ugly head this morning. After so many months of ttc. 
I just don't get it. Why is something that is so natural, also the hardest thing in the world? Something that, from a young age, we're taught will most definitely happen if we don't protect ourselves? Something that unwilling women everywhere manage so easily, yet those of us who try hardest struggle most with. 
Think I'm going a bit mad...
Baby dust to the rest of you!