Waist trainer or Bella band after birth

Have any of you moms used a waist trainer or some type of girddle after giving birth? If so how long after birth did you start using it? Did it seem to help with shrinking your belly back down? I have one that I used to use before I ever got pregnant for when I work out & one to wear to help waist train. Never used one after birth. This is my second pregnancy and after I had my first daughter I was 20yrs old & bounced back pretty quick and worked out after healing from having her. Now being 29 and older I just want to do anything to help with that belly bulge you get after. I do plan on working out and eating healthy because I know just wearing a waist trainer and not doing the other is goin to be my miracle in helping with that. Just looking for if anyone has and if they have what brand or recommendations you have?