Girls??how do you sleep with your belly? I read and heard that you can…

Girls??how do you sleep with your belly? I read and heard that you can sleep however is comfortable, some say only on the left side...in sleep I don't even control myself?I can almost sleep on my stomach, and sometimes throw my hands up, then the belly feels like it pulls, as if stretching) The midwife in paid says the main thing is that it should be comfortable ?completely confused