When I started injections, my life improved greatly. I went from living as “Eyore” back to my normal “Tigger” mode. The boost in energy and sexual drive was amazing. I started losing weight which helped with my natural production so we had to lower to dosage.
As far as breasts, I started growing mine at puberty, had them always since. I would say that based upon my activity level and libedo, that my T levels were always normal/high. I am happy to carry a 40C rack now. i was raised as a girl and did not start acting like a male until high school, and then only part-time.