PLEASE ANSWER

I really hope someone can help me because I’m honestly concerned!! My period always starts the 25th of the month!! It has been this way since I was 9 years old. Well this morning I woke up for my early morning pee and when I wiped it was light brown and pink. I went on with my day and it’s was the same color. TMI but my pad has only brown discharge in it with some light pink. Sometimes when I wipe it can be dark red but that’s honestly not often. Could this be implantation bleeding or am I just on my period