Pregnancy test / BHCG is done approximately on the 17th day of embryo transfer or for other treatments on the day of the missed period patient is the called on the 21st day of embryo transfer for a scan to confirm the gestation sac; we can also know the number of sacs and rule out the rare ectopic. Once this is confirmed, a second scan is done 1 week later to confirm the viability of the fetus or multiple fetuses (DATING SCAN)Medicine dose will be adjusted and new medicines may be added