I've been on hormones for a bit over 9 months now. Immediately after the first injection, I felt a lovely overwhelming sense of peace about me, and sparked new-found confidence in me. I really believe I could feel the testosterone absorbing slowly into and flowing thru my bloodstream. And then I ate sushi.
Within the next few weeks I did more exercising and stretching than I had previously, and I noticed my muscle mass increased and hardened much faster, and my endurance of lifting and carrying significantly increased, as well as my energy levels. My facial and body (specifically arm, leg and treasure trail) hair thickened and darkened, and has been looking more prominent and nicer ever since (now growing hair on my upper thighs since about a month ago).
About a month in my voice dropped quicker. It was actually fairly deep before I started T, as I would practice often and tune my voice with a guitar. My libido increased pretty fast too, and I was actually capable of maintaining an "erection." A decent amount of growth occurred downstairs within 3-5 months, I believe.
The changes at first were electrifying and I would talk to my room mates about it a lot. Now, at nine months, the above of what I've described has only gotten better. Although, my menses had not stopped, and as of now I do not know if they have. I have stomach cramps at the moment, but I feel a kind of renewed energy and I feel like it could be over. Last month the cycle only lasted 3 days of consistent blood. So, that is finally changing. I also did a little research, because I would have occasional UTIs (after the cycles), and I think it's because T alters the bacteria and yeast count in your downstairs region. (This is where I found some reliable info on that:
http://www.ftmguide.org/tandhealth.html#yeast)
Oh. And about six months or less into HRT, after getting some blood work done, my dosage was doubled because I would run out of energy towards the end of the month, since I did the shots in the beginning. (T has a half-life of eight days in the body.) As time goes on you of course become more accommodated to the amounts, and then you're doc will give you a blood test and okay an increase.
Sorry if I rambled a bit. Hope it's resourceful