does taking antiandrogens or stuff like spironolactone make you feel different in any way?
That might be difficult because most of us start with that and Estrogen, why don't you look up the side effects.
What kind of changes are you expecting?
The best place to start is with your doctor. They are the one who would be prescribing this for you and would be able to explain exactly what to expect.
Yes, it does. With my dose that's way too low, I still haven't felt much of an effect from oestrogen, but anti-androgens have made me feel much better. They kill libido, lower aggressivity, calm worries about masculinising further, reduce body hair... A lot of good stuff.