The mock transfer is usually carried out mid-cycle on the month before your fertility treatment commences. Your clinic will advise you regarding timing of the mock transfer.
A speculum is inserted into the vagina, the same as when having a smear test. A very fine tube is inserted into the cervical canal and into the uterus. This procedure mimics an embryo transfer.
The procedure is a little uncomfortable, there may be some period type pain but this will only last during the procedure and occasionally may last for a little while afterwards. A mild analgesia such as Paracetamol may be required following the procedure.
The mock transfer is performed to ensure there are no complications on the day of embryo transfer. It allows the lie of the uterus to be assessed. If the transfer is difficult and your uterus needs to be manipulated in order to get the catheter to the right place, or the catheter touches the fundus of the uterus, it can cause uterine contractions. These contractions may cause the embryos to be expelled. The embryo transfer therefore provides valuable information regarding the placement of the embryos prior to the actual embryo transfer.
There is no special preparation prior to the transfer. You may eat and drink normally before the procedure. You do not need to empty your bladder before the procedure unless you feel uncomfortable with a full bladder. You should wear comfortable clothing that gives easy access to the lower part of your body.