Intersex?

Just got some odd news from a new endocrinologist. She thinks the most logical explanation for my weird test results is that I'm intersex--that my ovaries or some other endocrine organ contains XY tissue. My external appearance and internal gonads are female, but my lab tests suggest that something more is going on. I'm just trying to wrap my mind around the idea. Endo says Medicare won't pay for testing to be sure because it wouldn't change treatment. Have others dealt with this?