I got the same thing on each side of my breasts, and I didn't have no surgery or anything. I think it's just because we all have different breastbones. The different breastbones might be causing those holes to be there. I would go to the doctors just in case it's nothing serious.
I think you should just gather courage, be strong and try to follow what the doctor tells you. If the area was infected, there is a possibility that you won't get stitches. Doctors don't stitch any infected tissue.