Let me know when you obtain the ability to get pregnant, at least for a portion of your life like any healthy adult woman should, carry a pregnancy to term, naturally produce enough estrogen to even look female without requiring hormone shots for life, and change your chromosomes from XY to XX. All of these traits are found in healthy adult women. The best cosmetic change you can make would be exposed by a DNA test or by an observant individual.
So no, sex change in the true sense, like Mars colonization or mining Titan, is not possible, not now, probably not at any point during this century.
When you roleplay, I'd suggest doing so without:
1. Losing your grip on reality.
2. Making ridiculous demands of society.
I for one think society isn't tolerant enough of trans people but I'm not gonna support your attempts to radically alter mainstream culture and how men and women, the so-called cissies, relate to each other or how they raise their boys and girls just so you can feel "safe".