3 months is nothing. It took me a very long time to see anything for myself and still I am very small breasted. But see my mom when she was younger she said she had very small breasts, other girls would make fun of her mosquito bites for tits, it wasn't until she had babies that they got bigger. I still look like I'm going through female puberty up top. You gotta think, no matter what the genetics are with the female members are in your family, they were born completely with estrogenic producing bodies and all the right stuff, we as trans-women, we started out with the wrong bodies, got all that testosterone to battle against, so don't expect any miracles. Just enjoy how you feel and the little things, give it time, then look back on yourself before ever starting HRT, you'll see the changes that you didn't even notice were happening.