When I breathe in deep, pain in my right side below my rib cage; same pain when I move. Also feel kinda nauseous. Had unprotected sex last 2 weeks.?

R sided pain. Gallbladder comes to mind, but can be many different things.
Be evaluated. . Given these symptoms you need to be evaluated by a physician. It could represent a variety of intra-abdominal processes.
Gallbladder? The organ that lives under the rib-cage right is the liver and gallbladder.Too soon for hep c ( a sexually transmitted disease in my opinion) to cause symptoms.A gallbladder ultrasound is a reasonable next step.