Testosterone Therapy is something I think about all the time. I think about how it would change my body and my voice, and it makes me excited for when I can start taking it.

But, essentially, I know nothing about it, and I don't want to be brash.

I would like know how you would bring it up with your doctor in the first place, and I want to know what sort of side-effects Testosterone therapy could have (even though I think it might differ for everyone).

My mom doesn't "believe" that I am of the masculine sex, so she won't let me talk to a doctor about this sort of stuff, so I was wondering what sort of things all of you men on T have been told or were told by your doctors?

A bonus question... Is there any way you can lower your voice or at least have it pass as more masculine before taking T?

Thanks in advance!

As far as I know (not on T yet myself), this page is a pretty good overview of the effects of T and various questions one might have about it : http://www.ftmguide.org/ttherapybasics.html

I assume that in most places you'll be required to provide a letter from a psych to "prove" that you're trans in order to get access to HRT, so you may skip your usual doctor and go straight to a psych and then go get your prescription from an endo once you got your letter.

As for your mom, unless you're somehow legally bound to her when it comes to medical matters and require her knowledge and/or approval in order to see a doctor or get treatment, if she doesn't approve then just don't tell her. Just say you're going out somewhere with friends or whatever and go to the psych/doctor. If you're a minor and her involvement in your medical decisions in legally unavoidable where you live, I'm afraid you'll have no other choices than waiting until you reach majority or trying to change her mind.

On the voice part : I don't know the proper terms to explain it, but one thing that helps is trying to make your voice comes out from a lower place physically - like making it resonate in your thoracic cavity instead of your throat. I don't really know how to explain it, but if you pay attention and practice a little you can "feel" where it's coming from. It feels a bit like using the same muscles you use when expectorating (coughing from your lungs), as opposed to using the muscles in your throat and the back of your mouth, which are the ones used when speaking in a lighter voice. Well that's how I feel it anyway, it may not be physiologically accurate at all 

Thanks for the answer. Yes, I'm legally bound to her, but I can wait.

I had two questions that this site didn't seem to address, though.
Other than balding, is there any other serious side-affects that could occur? Any dangers?

Also... I'm not sure how to phrase this in a "safe" way. Can... Mm... A biological male still partake in sexual intercourse with a tansgendered male by... Er... Normal heterosexual means?
If this surpasses site limits, I'm really sorry. I haven't found anywhere else to ask this question, though, so I thought I could try here.

There are plenty of transmen around who get their rocks off by having vaginal sex with cismen. There's no shame, though personally it would not be an option. Then again I'm not gay either. 

As for side effects, some are and some aren't. Some are the things that come along with being a man hormonally. All men are at some risk of them due to their hormones among other things. Some are really side effects due to us have female anatomy. They are listed on the same site that Sia noted, but here's a direct link to it for ease: http://www.ftmguide.org/tandhealth.html#sideeffects