The feeling I get is like I have a head in between my legs and the baby will fall out! That's the way I feel when the baby drops. And I don't get heartburn.
Pretty much that....I went to bed one day big and relatively comfy with where she was, woke up the next day and felt like if I squeezed my thighs together I would suffocate her!

Then when she went again at about 39 weeks I felt like I would fall over and started to waddle...like a duck, DH used to laugh at me lol