How do you know if baby is breech??

Emma • Mum to Harlen Jane🌷July 6th,’18 & Nolan Stone 🍭June 28,’19

Question:

How do they find out if baby is breech if they don’t do another ultrasound??

I don’t have another one scheduled...

and I just keep having standard 4 week then two week appts till birth.

Is there a different way to tell?? Will they know before I show up to give birth?