First frozen transfer

Gr

Hey ladies, just a quick question I'm due to get a baseline bloods done on the 06/01 for my 1st frozen transfer. My period came earlier than expected & I will be on cycle day 6 when I get it done. My clinic is closed for the holidays so I cannot ring anybody to check. I am doing a non-medicated cycle only with progesterone pessaries after transfer so I guess it should not really matter hopefully. TIA