Eating habits.

Wow! Well I gave birth to my daughter in January. And while pregnant I ate and ate and ate!! I was always eating. I gained about 45-50 pounds while pregnant and have only lost about 25 since I gave birth. Well I have continued to eat like I am pregnant. I’m also on Mirena and not sure if that has something to do with now losing weight. I stay pretty active working full time and having 3 kids 4 and under. Anyone else have this issue? Or any advice?