Where to start?  
I am 29, XX female. and was born very, very early.
I noticed in the past that my anatomy was not like a normal females, certain parts where larger than the should be for  a "normal" girl.  Due to the size, still, I have an obvious "something" hanging below the usual parts, which to me, looks like a "penis".  Does that make more sense?  My OB said that it is a normal variant some woman have, and I could have surgery to make it smaller, so I am not totally nuts here!  My family even jokes, still, that "maybe I was really a boy", so I don't think it is just me.  I also had a larger amount than normal of testosterone as  young girl, but my other levels of hormones seemed normal, from what I understood of reading through paperwork I recently found.  When I heard the term "intersex" as an older child, I immediately thought that is me, so this isn't a recent discovery.
Also, dr's mentioned in their paperwork of these differences, but yet, no one mentioned them to me.  I have gone to urologists, as well as my gyno, for health problems, and none of the uro's mentioned my differences.  Maybe they figured I knew, and was embarrassed, if they brought them up?
I did have my karyotype tested at around 10/11 years old, and it was XX.  Any other ideas as to what is going on with me?  I do have a chromosomal disorder I was diagnosed with as a younger child, and through recent research, discovered that "ambiguous genitalia" was an uncommon occurrence with it!  I need to suck it up, and ask a dr. to look into this I think.