I'm five months pregnant now but I have had this question on my mind. Does anyone know? Can damage occur before implantation? This is the couple weeks after you conceive. I am thinking no b/c the placenta hasn't formed yet so I think the cells just survive on it's own until it implants on the uterus. I drank during this time (and even after implantation I did these things b/c I didn't know I was pregnant) and was also on medication. Most likely everything is okay. Just wondering if someone could answer this.