Advice for Laser Lipo sculpt? I don’t want stretch marks. (photo)

Trying to have a baby my stomach stretches back and forth when I eat. I am melting it with red laser lights and it’s working but I’m worried about the sag at lower part of the abdomen. I got skin tightening and cavatitation I think it’s working but I don’t want stretch marks. I’m getting a Sculptra bbl to even my stomach area. Any advice