(17 weeks&3 days) First pregnancy; inputs please

LaSchae
Help! Since last Friday I've been feeling this funny sensation in my rib cage located on the right hand side. I've only felt it when I lay down; sitting up or walking around, I don't feel a thing. Am I the only one that's trying to understand what's going on? Lol. Please; some feedback from experienced moms will be GREATLY appreciated 💕