Did started her periods at 9. She has been very regular from day 1 but they are so heavy so is struggling at school and gym etc. she does a sport at competitive level which involves very tight/short outfits. She has asked to get something to make them lighter so she can cope with them better. I am happy for her to do so but wondering if 12 is too young to pump a load of hormones into her body? Thoughts please and any similar age experience?