Does those expensive stretch mark creams remove dark stretch marks.... what is the best way to remove them its been here for 9 months?

No: They don't work at all. I really wish they did, believe me! they will fade with time. There are also laser treatments that can help but these are quite expensive. And there's no point now because if you plan to have more children, you might get new stretch marks. These are your marks of pride, and you should be proud of being a mom and having a healthy pregnancy. Good luck!