Hi, recently i hurt my back, I was on a bouncy castle and had a fall and bent my back, head backwards towards heels. This caused a lot of discomfort to my back, momentarily winding me and later i noticed when i bent my torso down to the right my bottom rib at the back clicks out of position and then i have to bend the opposite way to click it back as while it is out of position it is quite painful, is this a cracked rib?