Your ribs are most likely expanded due to the growth of your uterus pushing your organs outwards. It's not comfortable at all and I'm going thru it right now. Scary thing is out of everything that will expand during pregnancy, your ribs are one of the few things that will never go back down.
Depending on how big yiur torso is it can be.....I'm only 5'2 and have a short torso
Mine was gas. To be honest, it hurt
Already? I didn't know the baby could be that high up already. Really hurts
Sounds the baby! Mine has done that to me 3 times and one time it woke me up from a nap. I had to get my husband to rub that area and the baby settled down.