DolceVita, yea, just told them to keep it to themselves till pregnancy is stable, most of them do keep the secret.
Just soak bird nest in hot water for an hour or two till it fully expand, then check for hair, feather or impurity to remove. Put them into those double boiled pot, slow cooker or those porcelin container for double boil purpose, add a bowl of water, 2-3 slices of pao shen (optional), red dates and boiled for like 2 hour. 15 minutes before boiling time is up, add rock sugar.