Is the brown discharge my period of I have never gotten my period before?

Hi everyone, I am currently 14 years old and turning 15 soon. I have never gotten my period before but was told that this was partly because of genetics and also relates to my athleticism. Recently, I discovered what could only be referred to as brown discharge in my underwear... at first I was very confused at what the heck this could be as it looked like I had just pooped my pants. However, after analyzing it and it's position in my under garments, I realized that it was certainly not poop and was rather coming from my vagina. I don't really understand what this means... it has continued consistently over the course of two days more than once daily. I have put a pad I had just in case in my underwear to prevent any more from getting ruined as I suspect it will continue. Would this be considered my period? Is this normal? My friends and relatives have certainly never had a similar experience and I don't know what to tell my mom... I would greatly appreciate any help! Thanks so much