Endometrial lining question for Embryo transfer

Cl

****update

1 week later and my lining is now between 6-6.5 I am told. Just waiting to see what the doctor says. 😟 the transfer is planned for the 24th so maybe there is still time.

I have been on Estradiol for 12 days now and my lining is only 5mm. I have 2 more weeks until my transfer but a bit nervous it isnt getting thick enough. Anyone else have a similar experience? Or know how much it can increase per day? I have been relatively calm about the whole process but now feeling a bit anxious!