Sharp Pain and Low Baby

Tarra
Anyone else experiencing sharp pain under their breasts? It kind of just comes and goes. It's always on the left side and feels like it's on the outside of my ribs, so I'm pretty sure it isn't baby jabs.
The other issue I am having is baby has been sitting really low the whole pregnancy, but every once in a while it feels like he is sitting like right where my leg meets my abdomen if that makes sense. It's not painful, it just makes it really uncomfortable to sit down because it's right where the bend in your hip/abdomen is. Which I have a desk job, so I'm sitting most of the day... anyone else feel this?