Good evening everyone, it's week 40 of pregnancy. It's hard to walk, my…

Good evening everyone, it's week 40 of pregnancy. It's hard to walk, my belly is heavy and I can barely lie down or sit. And today, I just burst into tears out of nowhere, although I was a reasonable person throughout the whole pregnancy. Is it fatigue or hormones? How do I keep myself together and look forward to meeting the little one?