Anyone else find it impossible to lay on their backs?

Jessica • Mom of 2 boys, 1 girl🧒🏼👦🏼👦🏼26 years young. Engaged💝💍
Since about 28-30 weeks I've been unable to lay on my back because I feel like my entire body is being squished and I actually can't breathe. It's a horrible feeling! Even laying on my back for my doctor to measure me is torture! Anyone else experiencing this and know why this could be?! When the time comes I won't be able to lay on my back for the delivery😕