I know this is tmi but curious if it happened to you before?

Thursday night when i wiped it was light pink, small small bit. Well friday morning i had my period but it was like normal, wasnt red more of brownish pink. I had really bad cramps friday but normally i bleed heavy if it hurts reaal bad but there was barely any. Same thing fri night usually the next morning theres alot but there wasnt.. And today its like brownish color......hasnt hardly been red red like normal.....question is, could i be pregnant... I ready some ladies still have there period, and i know its true cause my friend was preg and had her period the first few weeks. . . and thats why its a diff color?