I think that the concern is that using it too often can change the Ph balance which in turn can cause infection. I would just double check with your doc. It won't directly affect your baby but it could cause other complications is what I've heard.
I'm not sure but I know that when you're pregnant, your scent "down there" changes because of the extra discharge and some women have problems with bladder control. So I think showering everyday should be fine. I do not know about scented soaps. The baby is locked up tight behind the cervix, enclosed in a sterile womb. I highly doubt a fragrance would be cause for alarm. And it definitely wouldn't get to baby except what is absorbed through your skin.
Women dye their hair, use lotions all over their bodies, paint their nails, use makeup... all of that is absorbed by your body and absorbed by the placenta. So if you feel better using Summer's Eve, go for it. I don't think it will do anything.