When will I stop looking pregnant?

I’m about 6 weeks pp and still look pregnant. I haven’t been cleared for real exercise yet but I’ve been walking for weeks. I tried a medical grade corset. I

eat a healthy vegetarian diet. I exercised my entire pregnancy. I didn’t expect to drop the weight instantly but I’m starting to get really frustrated that my belly is still SO big and doesn’t seem to be making any progress. We aren’t directly breastfeeding much but I’m pumping 6-8 times a day. I want to wear my normal clothes again!