Stretch MArks Bio Oil X TRILASTIN

Hello!
I have done everything I could to avoid stretch marks during my pregnancy.
I had nightmares about it the whole 9 months.
I drink 2 liters of water everyday, eat really healthy, exercise 4 times a week, gained 30 pounds during 9 months and I use a body wash with vitamin A ans E everyday, use Cocoa butter for stretch marks all over the body twice a day, Bio Oil on my boobs, belly and butt 3 to 5 days a day.
In my first trimester until I was 5 months pregnant, I used regular cooca butter, only.
Plus, my mom got pregnant 3 times and had no stretch marks at all.
I have a couple weeks left until my due date and last week I started realizing stretch marks on my belly. They are not bad, but I am afraid they are going to get worse. They are below my belly bottom. the right side is worse than the left side, where i got only 3 little ones.
You cannot notice them unless you look at it close, but I know they could become huge and horrible.

I would like to know if somebody had a good experience using Bio Oil, cause I am using it for almost 3 weeks and I am not sure if its working or not (it could be stopping from getting worse, but they are not getting better).
Also, is TRILASTIN all that? is it really worth it?
or is it that kind of stuff that covers it up and when you quite using it, the stretch marks come back?

Thank you!!!!
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