would you rather get told something devastating once, then later one even more devastating? or would you rather know everything at once so you can digest it all at once? Personally, I'd rather get it all over with the first time... I think of it like this, doctor comes into the room and says you have melanoma... it is treatable and the prognosis looks good. Oh, yes, and you also have cirrhosis of the liver and are terminal, I'm sorry.
bad news is bad news, they are going to have to deal with it either way, but at least getting it all out there gives them a chance to hear it, processes it, and think about it all without getting slammed again a few hours, days, weeks, or months later with equally if not worse news.
This is based off the assumption you don't feel they will take it very well. Just my thoughts hon. Best of luck to you.
Oh, and maybe I'm a little confused, but do you consider yourself female? and if so, do you consider yourself gay as in lesbian? or hetero as in attracted to men?