My bump also feels really heavy, turning over in bed is a feat of achievement and it feels like my stomach is going to fall out / over 
The baby has gone back to being a frank breech, so his arms and legs are over his head all of which are sticking in my ribs somewhere, which is super uncomfortable atm. Anything apart from lieing down or being in a swimming pool is horrible.
I have scoliosis (which I keep forgetting to mention to my Dr, not sure how
) which isn't severe but I'm wondering if it's putting the vertebrae in the way of where the baby would normally be able to hang out (i.e. head down) which is why he's presenting breech. Next check up is next week where I am determined to remember to bring it up; if nothing else, if I deliver naturally I think they need to know in case I want an epidural, to be able to site it properly.