Postpartum body's

Ja

So before I had my son I was a size 4-6 depending on the brand. I never exercised but ate pretty healthy. I had my son a year ago and gained 78 pounds while pregnant I was on bedrest but mostly healthy eating. But now I can't seem to get the last 25 pounds off and my body is so different I'm so ashamed. Please help me figure out how to lose it. I've changed my eating habits and have been exercising. Helppppp.