I had the same question as you.
I had mine removed 5 days ago. I was supposed to get my period this coming Friday, but it started 2 days after my Mirena was removed. It has been extremely heavy. It is tapering off a bit now. The only thing is my breast are still very tender. This normally subsides a day or two before my period starts. But, they still are sore as though I am PMSing. What about you?