period is brown for 2 months

hi im 17 years old and i think i have been having my period for 1-2 months i dont get symptoms only once and a while but its brown and it does not look like blood every now and then its red but its been brown and constant every day for 1-2 months.. i used  to just get the brown after my period but now its just everyday and i dont know if its  something i should be worried about. if you could help it would be greatly apprciated