Unfortunately stretch marks are down to genetics lol. If you're meant to get them then you will! But I used bio oil and palmers cocoa butter
I'm ftm, my mom and sister both have stretch marks...I slather palmers cocoa butter every day and I'm 30wks...so far so good, no stretch marks :-)
I use boi oil to help me and it really,works :) its a little expensive but wayyy worth it
Baby oil in the shower and bio oil for afterwards :-)