I haven't looked at your photos, but this sounds like an iris freckle. If it has been there for years and isn't changing, it is likely a freckle. If you are absolutely positive that it is something new, you should be examined by an Eye MD. Find one near you at www.aao.org.
You can look at the picture by clicking on my profile. It'll be under pictures.
I would post a picture if I knew how to.