I went to the toilet this morning and there was a really runny dark brown liquid in my undies. It had red through it. I’m 13 and I haven’t had my period before. I do have pubic hair, but not any underarm hair and my breasts are there but aren’t very big. I have been reading up on it and I don’t think this is my period. But I don’t want to ask my mum because I dont want to go to the doctors. I have had no pain in my stomach or back. But yesterday and the day before I had very thick discharge, but that’s gone now.  Is this my period ?!?!?