Am I crazy or is my baby practice breathing in the womb right now? I have this pulsating movement in…

Am I crazy or is my baby practice breathing in the womb right now? I have this pulsating movement in my top belly area where her back/butt area is and it's like rocking my body a little during the pulsing. Very different from hiccups which she's been doing for the longest. This time it was a feeling and also something I could actually see... anyone else experience this???