What a delightful question.
I wish I could remember. I do remember some things from 9 months old and 3 years old.
But I suspect that images from prior lives might play a roll in all early dreaming, including any in the prenatal stages.
My 2-year-old niece has had bad dreams wake her up screaming from the very beginning -- when she was only days old. I suspect severe trauma, perhaps her most recent death. All we can do is give her our love to help her heal.