I have been having this intense, stabbing pain in my upper left rib which after a while also goes through to the same spot in my back. It gets bad when I sit for long periods and now hurts when I lay on either side while trying to sleep! It's unbearable sometimes! OB said this is due to the twins taking up so much space and everything else being pushed up and the ribs expanding to make room. He said the ribs actually separate from the cartlidge and in some cases if there is a lot of coughing, can become fractured! Has anyone else had this? How are you coping? Tylenol does nothing! I need better ideas for sleep positions since I can't lay on my stomach and now both sides cause intense rib pain. I try lying on my back with tons of pillows under my head and knees but that has started causing lower back (sciatic) pain!! UGH!!! Help!!!! I'm dreading beadtime tonight and already am in increasing pain!!!