The same day for me x
I didn’t hear anything until my next midwife appt, however I could see the results on nhs app as that publishes all bloods you have xx
Call up and ask your midwife - I'm sure they get it all the time!
Mine took a week to come back, they then contacted me via telephone and email x
I was told if I didn't hear anything via phonecall in a few days to assume all was good