I am not sure if different clinics have different protocols. But for me, I had another blood work 4 days after the first baseline and another b/w and u/s 4 days after that. By then the lining got to where it needs to get to so they didn't do another one and did the transfer 14 days later.
The only concern I would have will be is there going to have enough time to fix it if there is a problem with the lining since you will only have a few days left before you start progesterone and transfer. Hope others will share their experience.