Chest swelling and pain disappears on the seventh day of blastocyst transfer without any treatment, which is a normal phenomenon, and blood test for HCG will be taken around 10-15 days after the transfer to confirm whether you are pregnant or not. After 2-3 days of IVF transplantation, the embryo is normally implanted, and most of them do not have any reaction in about 10 days, so don’t worry if you don’t have chest swelling symptoms, and you can’t diagnose the pregnancy even through blood test at this time, because human chorionic gonadotropin is relatively low at this time. With the increase of pregnancy time, more than 10 days to go to the hospital for blood test HCG to confirm the pregnancy. There is no need to treat the chest swelling and pain that disappears on the seventh day of blastocyst transfer, but once you feel any abnormality, you need to go to the hospital in time to avoid delaying your condition.