Badly worded... can anyone feel the womb/amniotic sac?

Ok, so I don’t know how to explain this but... I am 31 weeks pregnant and when I try and bend over, or lay on my side I feel like I can feel my womb... like it feels like I’ve got a balloon or a hot water bottle under my top 😂😂

I know this is badly worded but I hope someone understands what I’m talking about! I’m quite slender and still getting used to having a belly, but I just find the feeling so strange hahah