well i was in year 7 one day and woke up to find my undies had brown blood in them , i kinda knew what it was and didnt tell any one , it only lasted one day , but then it came back in year 8 , the 2nd term i think and i had got mine and a frined told me she got hers too ... but my mum didnt really tell me about it ... and to this day i still am too embarrassed to tell her if i am in pain because of them or if i have them ... too embarrising ...