Girls, hello! Lately I've noticed that when I lie on my side, it feels…

Girls, hello! Lately I've noticed that when I lie on my side, it feels like I can't breathe easily, like there's not enough air, and my stomach quiets down and passes, I don't understand why. When I sit normally, as soon as I lie down, there's not enough air. Maybe someone has had this, measured pressure 137/76, for me it's high.