well, for starters, we homeschool, so transportation isn't an issue - and, yes, the girls ALL know that I use cloth pads, and we use cloth diapers, so that's not a surprise. We talk openly about bleeding, but I'm pretty sure they don't really comprehend how it will effect THEM.
I remember starting my period in a new town, and with SEVERE pain. My mother who prepared me for sex at age 9 never really prepared me for the period. It hit me in a Kmart, and she bought me motrin and OB tampons *there* and walked me through using them IN A PUBLIC restroom. I used tampons for many years, but I've always hated them. I had dismennoreah for many years and my obgyn started pressuring me for the bcp at about age 14, implying that I **needed** it. So, my memories of that time suck big time.