I been om HRT for about 15 years and I started at age 16 and now im 31. I was prescribed estrogen bottles and progesterone at my clinic and each time I moved, I showed the new clinic I registered in, my prescription papers and they would prescribe the same to me once I was assured and checked by my physician.
In the first few months, you will notice and feel your breast growing just a little, and the signs of it itching means that it's working, so DON'T scratch!!! Use lotion to rub it on the part where it itches.
You will also get moody and emotions will increase. There wll be vomiting and increase of appetite. I still take HRT once a week every friday and inject it on the upper part of my buttocks as I was told since that is where the most fat is. Once I am done, I eat some food and sugary stuff or drink soda or juice and also take prenatal vitamins. DO NOT OVERDOSE OR USE MORE THAN WHAT HAS BEEN PRESCRIBED TO YOU! It can cause cancer or kidney failure or stroke if you do not listen to your doctor's instructions.
Other than that, it won't help you with your voice maybe slightly. But it will make you have a radiant female glow and skin will gradually become softer after 6 or more months. What also is helpful is taking B12 pills which will help with hair, nails, and skin to become softer. Although HRT will have all it's effects and side effects, your body hair will slow down but will NEVER stop. You'll have to get electrolysis or laser.
As for all that, I am now post op since I just got my srs + BA done by Dr Chettawut just 3 weeks ago.
Good luck on your journey. A long journey and worth it. Making the effort and not rush things, will give you great results.