You can’t get rid of the stretch marks unless you go under aesthetic treatments (stretch mark removal). If you’re already applying creams and still have it, it’s most probably genetic. Stretch marks will lighten overtime but will still be there.
Unfortunately there is no way to make them disappear but we can only try our best to not gain too much weigh. Cause I read a lot on stretch mark and it seems a lot to do with mainly genes and weigh gain.
I have been diligently moisturizing my skin twice a day since first trimester and no stretch marks so far :) not sure if you start now will it help?