day 18 my waist hurts wen IMA get ma period k wiped brown discharge OK normal I get that the first day.k 19i wiped brown again w light red .. like twice in that day. this only happend wen I wipe .den 20 tree 22 brown ..! is that a period. n ever since den I have back pain. in my waist .this has never happened to me .no period yet .just cramping n my waist lower back been hurting ever since then .took a test n it was negative. still no period . ??