Hi there!~ I really wish I could help you out! I think you should seek the opinion of another doctor.
Have you ever had any back problems? I have a curved spine and a slouch alot, due to being top heavy. I got a breast reduction when I was 19 years old (2 and a half years ago), and it has gotten better, but sometimes my circulation will cut off and my hands will get tingly and I will get light headed. If you have any problems with your back, this very well could be where its coming from!~
thats about all I can think of, keep us updated!
<3 jess