I had this with DD2, I was so huge the doctor said my stomach was th average size of a woman pregnant with twins!
I was told to pack my bags from 26 as poly babies are high risk of premature birth! I ended up having a cesearean at 36 weeks but she weighed in at 7lb 10oz & we were in hospital for 2 weeks!
I remeber the white gumboots they wore in theatre and the massing GUSH Of fluid that burst out all over the floor it was insane!