Ladies with the Mirena IUD, The first real period you had after getting your IUD placed how long was…

Ladies with the Mirena IUD,

The first real period you had after getting your IUD placed how long was your period? I got mine placed March 8. And I started my period March 27. It's now day 7 of my period and it went from being super light to heavy. And I feel like it keeps getting heavier and heavier. I have no cramping. Just bleeding. I'm sick of buying tampons. Is this normal? I'm thinking about calling my Gyno on Monday, but I wanted to know if this is normal. I've always done birth control pills.. So I'm feeling like I'm walking down a dark tunnel with this IUD thing.