I'll be 37 weeks in a couple hours and I'm right there with you! I run out of breath just trying to turn over in bed! I can't wait for my little fella to drop so I can take a proper breath again! I also walk a lot slower, slow enough that I feel like I should have four ways flashing on my back and I step aside to let people walk infront of me.
Pretty normal for 37 weeks, Im 36 and right there with you! Tired easily and just feel lazy. Its really impossible to say if labor will be soon or not