What medical profession is she in? 2012 not scared of Aids.
She is no saint in this whole thing, she should know better, its people like her & us that got us where we are today. Too much TRUST.
But my advice is to tell her now & just like your HIV result, you'll both know now than later, and you can live with yourself.
I am in my 1st relationship since 15 Nov, I told him a week later & so far he's accepted me. We made love once with protection & he's been sweet, but I sense he's careful, but I am glad, we can both decide what kind of future we both want now.