There is a stigma with transsexual, little question with that, but the stigma is societal.
I know it may sound strange, if you don't like the term transwoman, and you identify more with being an intersex female, why don't you just use that.
I know that may sound silly, but you are not the only person around this board that can do that.
I am intersex as well, and I have the scars from an infant surgery.
I personally do not have a problem with the term transwoman or trans, largely because its a descriptive term used in specific, but often necessary circumstances. I think of trans in the way of transitional. But thats just me.
I also to do not like the concept of "changing ones sex". I prefer transitioning too that. Largely because it gets around the stigmata of "Sex change" as in surgery, and the societal focus on the surgery, and not the person.