Need some input

Carissa

I'm 5 months pp, after I had my son I lost 15 pounds. Now I've gained that all back plus an extra 5 pounds. I'm so unsure what it is, I exercise 3x a week and keep track of my calories and carb intake. Im not sure if its from breastfeeding, my IUD, or somethings wrong with my thyroid 😔 My Obgyn said its impossible for the IUD to cause weight gain but I keep reading otherwise. Please any opinions or input!