period talk or implantation

My period came 5days early &I I've noticed some weirdness in my period . My period was brown for 2 days but then turned the maroon color red. My period has been dry and medium for 3 days. There's a mixture between red &a brown when I wipe. Then in my pad is like a black color pretty much with some clots. I don't know what this means. I'm scared if I could be pregnant .