Need to fix a protruding rib. Any ideas?

I'm a teen female, good BMI, not out of shape, not underweight, nor overweight. On the left side (only the left side) of my ribcage however, I have two ribs-(only two, not the entire left side of my ribcage) just below the breastbone-that stick out near the edge of the bone. It looks very weird and unnatural, especially when I wear a swimsuit. Is there anything I can do to make them go back down? It's so embarassing. I've never broken my ribs or had any injury that could cause them to look so misshapen.