Is my 40 week breech baby flipping??

Megan

In 40 weeks in a day. Baby has been frank breech and I noticed this last hour that it feels like his head is buldging on my right side. The top of my belly feels soft for once. Could he be flipping? I’m too nervous to move cause I’m afraid he will flip back the wrong way. Should I try those yoga poses to convince him to flip?? He’s wiggling a little bit I’m drinking a soda to encourage movement.