Once the embryo transfer has been performed, and up to the moment when the pregnancy test has to be done 10 days after the transfer (beta wait), there may be some discomfort that is usually normal.
One of these discomforts is bleeding, which is spotting that is less than a period and can range from pink to dark brown and is limited to two or three days after the transfer. This spotting is usually due to the cleaning of the cervix prior to the canalization or due to the canalization itself with the transfer cannula to enter the uterine cavity and leave the embryo inside the uterus.
However, as mentioned above, this is a spotting that is less than a period and is limited to itself, but if it occurs, it is necessary to contact your doctor who will give you the necessary indications to continue with the treatment.