I always thought that it wasn’t until later in the pregnancy when the baby starts to get really big that the mother’s insides get all squished, but that’s not true.
I am almost 16 weeks pregnant and everything is already all mushed up in there. My bladder is smaller- I have to pee regularly, but not very much comes out. Same with my stomach- I get hungry often, but can only eat much smaller amounts than usual at a time. I can’t finish my lunch, so I am saving it and will finish when I have room again!