So, I may not be a trans woman (I’m not going to share that information) but woman, even if they were born with the whole deal, will also be shut down like this by other woman. Like if a cis woman says “I want to get surgery to get bigger breasts” or “I wish I could have children”(if they’re infertile or struggle with that) other women, whatever their situation is, will reply with all the reasons she wouldn’t want that. Not to shut down your experience, but you’re just seeing the fatal flaw in women spaces: the misogyny internalised within (mostly older) women.
pro tip: when a transgender woman talks about wanting to have something like pregnancy or big breasts, that is not an appropriate place for you to start talking about how awful it would be to have that thing.