People vary with how long they are on hormones. Some stay on T for the rest of their lives, some go off for various reasons. If you have a complete hysto and have your ovaries removed, it is something that you will need to discuss with your doctor, as the lack of sex hormones can cause health problems. If you have no surgery and go off hormones then it is likely that your cycles will start again.
All that being said, I was on T for three years, off for one and just restarted 3 months ago, as I unfortunately lost my access to a doctor since I was overseas. I personally don't have much facial hair yet, but now that I have a new doctor I've noticed a lot of new hair growth. The changes happen for different guys at different times, just like puberty. My husband hit puberty and had facial hair by 12 whereas my brother couldn't grow anything until he 17. A decent measuring stick would be to look at the men in your family to get an idea. It should be noted that if you go off T some of the effects will reverse such as body fat redistribution, monthly cycles may return and I experienced a decrease in the growth of my facial hair and body hair. Now that I'm back on its starting to pick back up.
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