I heard that wearing girdles/shapewear after having a baby helps control the saggy/deflated stomach feeling. With my first, I didn't even know these existed but my stomach felt gross and uncomfortable after birth. Before getting pregnant, I bought a shapewear/spandex thing that looks like a cami/tanktop. Can I use this after birth or does it have to be one for post partum? Did any of you ladies use one? What was your experience?