I'm almost 13 and a girl and I just got my period a month or so ago and for some reason it's very late when I go to the toilet to do a poo it hurts bad and stings feels like im pooping a cactus or a hammer and when I wipe all I see is blood and I am constipated all the time but I drink plenty of water and my parents don't care and it's embarrassing to talk about. Anyone know what it is?