How can I know in what position my baby is??

Liunnet • Mother of 2 boys (2&1) and pregnant with a baby girl 💕
I'm 24 almost 25 weeks and and I've been wondering how can i know in what position my baby is? My obgyn everytime I go she just check the heart beat!! Yesterday in my appointment I lasted for 10 minutes and left!! 
I see post of people at this stage that even know how much their baby weight!!