No, it is not possible yet. A gestational sac can be seen as early as the 5th week of pregnancy, or 3 weeks after conception. If no sac is seen by this time, it is possible that the woman ovulated late.
Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI)