Weird Period

Samantha • Married 💍 Bella Marie Bettes 03/28/2019💞 👶🏼🍼 Happily in love.💕

So, my periods are always normally 7 days long and always super heavy. I started my “period” 13 days after ovulation. But the weird thing is it was only spotting and it was pink and browns then on day 14 I had one and a half almost full tampons and now on day 15 it’s spotting and light brown and pink. What could be wrong?