For about two years I've been on estradiol, medroproxyprogesterone, and spironolactone. For the first month I was on the first two, but a month or two after adding the t-blocker I got my first period and they hurt like hell. Just throbbing for a whole day. I just kept curling up and clutching them, and this was probably the worst consistent pain I've had. After that, it's been sporadic pain. My nipples would sometimes be painful, like sharp pain. Also got the itchiness. I could feel the breast buds just behind my nipples for a while. Then I'd have spells where I wouldn't feel much, but my nipples would usually be sore if I touched them. And oohhh even now I hate accidentally hitting a door-frame with my nipples..

Didn't take long before I needed a bra (38A) and then for several months I padded my bra to fill out a 36B since the shape wasn't quite right to fill the upper part of the cup. Then over the summer I realized I didn't need the inserts anymore.
Now I'm on my second month swapping the medroproxyprogesterone for prometrium. I've noticed my breasts have grown a bit (both before and after the prometrium) and I'm a solid 36B now, without the inserts. I also have more cleavage and upper fullness and I don't have to push them together hardly at all for it to show. I can't quite feel the breast buds anymore but there is considerable breast tissue now. I'd say I'm into tanner stage 3 now. Nipples are still a bit sore to the touch but not as much. Mostly, when I know I'm getting growth spurts, my breasts are itchy all over and they get sore for a few minutes at a time, usually like a dull throbbing achy feeling I guess deep in the breast tissue and sort of all over. The pain isn't just around my nipples anymore. Overall, I'm pretty happy with my growth, it's been fairly consistent, though maybe in the middle of my transition it seemed like not much was happening with them.