Yesterday I had an embryo transfer and this morning there was mild cramping that intensified to stabbing pains and then returned to cramping by mid-day. I ve been nauseas the entire day, however, and after lunch, everything I had had came up. My doctor says that this can t be the result of anything they did, but that it sounds like I have a virus. Is there any way that the heaving in the lower abdomen can harm the embryos (2) in any way? I m really worried and afraid now that this might hurt of chances of having a successful pregnancy.