I have always wondered if a transsexual should disclose to a new partner what they are
How come? What has made you think about that?
Personally, I think for the purpose of getting intimate with someone on a long term basis and obviously fertility issues, then it makes sense. Even people that have fully transitioned and have had successful surgeries will have a few scars that, up close and personal, are spottable!
I had known my DH for about 6 months before he told me his history. I actually didn't believe him, i'm not sure why. 10 years on it still doesn't really make sense! I don't really think about it at al apart from at significant times, obviously fertility treatment, and when he has to have (infrequent) medical checks to make sure that his hormone levels are o.k I can't really resolve it in my mind. I'm glad. That is how it should be I suppose.
I had a pollyanna view of the world before I met him and thought everyone would be respectful and decent and understanding. That sadly hasn't been the case. Most people in our lives don't know. The few that do are supportive. Those that haven't been supportive and treated him at best like a freak show are no longer in our lives.
Fortunately, we tend to choose friends who are open, accepting, respectful people who would care more about who we are as people rather than what is in our underwear and whether it was created though surgical intervention or otherwise. I sometimes wonder what some of our friends would think if they new. DH has been on stag dos and blokes nights out and i wonder how people would react. I actually think the majority would be absolutely fine, because they KNOW him. It is generally the unknown that people are frightened of.
I would ask you, all you people who are worried about sharing a changing room with a transwomen who is pre-surgery.
Think of a woman you know, on the outer fringes of your social circle, someone you have known for a while. Someone in your office, at a baby group, in a club you go to, book group, whatever. Someone you like or feel warm towards.
Now imagine a group of you, including this women go to a spa for an afternoon.
This woman you are thinking of could be a transwoman. It is quite possible.
Are you going to reject her, exclude her, change your opinion of her because she is a transwoman?
Or are you going to be respectfully curious? (which is the best possible response I think)