How Long will it take me to lose my pregnancy tummy? I miss being skinny. It's been ten weeks!

Any parts of my body can be skinny except my tummy. No matter how I exercise, planks & sit up, the tummy still will be buldging up. Mine was caesarian, so there will be that layer of tummy will continue to be there forever..I guessed that's the sacrifices of becoming a mom. Although mine still there after three years of giving birth, I do wish others may give you a better ideas how to handle it. I am following your post to see whether there are ideas to help me too :)