Post baby tummy

Amy • Sexiest couple ever
My son is nearly nine and I was skinny before I had him but have been about ten kg heaver ever since. I have begun at the gym. Getting and keeping weight off is a constant obsession which effects how I eat every single day and how I feel about my body and what I wear. Even when I lose all the weight I can't get tone back in my stomach. Some of my friends had babies as early as six months ago and their weight and tone is back. Please help. :(