Broken or dislocated rib?

The last 2 days my ribs have been extremely painful. When I sit, stand or lay down. I'm just in pain. My one rib kind of feels like it has pushed or popped out of place. I'm 32 weeks and 3 days now. And on top of this terrible rib pain I have gotten the flu. This is my 3rd baby so I know some rib pain is expected but this is something else, the pain get so bad that I actually wake up from how bad it is. My 2nd was born at 32weeks 6days for unexplained reasons. Could this cause this little one to come earlier too? And please advice to relieve this pain. The safe and appropriate amount of pain killers makes absolutely no difference to the pain