If you are breastfeeding it should help you to gradually lose weight during the first three months after delivery. Breastfeeding helps to keep the metabolism up and the weight down. You’ll find your hips and thighs will lose inches during this time. You can begin a more strenuous exercise regimen 6 weeks PP. Ask your doctor about any exercises that she/he recommends. I’ve found swimming after childbirth
helps to not only burn calories more quickly, but also helps firm and tone sagging muscles.