Make coco butter or shea butter your best friend
My Dr told me the only way to prevent stretch marks is to be born to a mother who did not get them and she be born by a grandmother who had not had them either. I thought it was a little rude but funny.
I heard that u can't totally prevent stretch marks as they're hereditary. But there r a couple things u could do to delay them from forming quickly by not gaining weight so quickly and moisturizing ur skin. I ended up getting stretch marks on my breasts while I was pregnant and a bit on my hips during my 8th month of pregnancy with my first. The have faded a lot since, but u can still see them. Oh well...I hope not to get more with this pregnancy...
You can lotion your belly but that helps more with itching and dry skin. From all the recent articles out, there's no prevention sadly. They do fade though.