So I got the Mirena put in on the 6th of last month and I started bleeding on the 10th like a…

So I got the Mirena put in on the 6th of last month and I started bleeding on the 10th like a period. Well after a couple days of what felt like abnormal bleeding for a period I kept bleeding but it would be like spotting all day. I would wear thin thong liners and after a full day of wearing it not needing to change it I would fill it. So it's not like I'm bleeding heavy but I'm still "spotting" and it'll be a month of bleeding tomorrow! My question is is this normal??? I also just had my baby girl in October if that makes a difference.