I've been on T for almost 5 months. I haven't notice any hair loss. But once I do notice I will be asking for a prescription from my endo doc to stop hair loss. Hair loss is one of many negative side effects of T I do not want. So if you do notice any hair loss you can just ask your endo doc to give you a prescription to stop it. But also my endo doc told me that if she put me on a prescription for hair loss that it stops T from working or the changes come slower... I can't remember exactly what she said, but something like that. So she won't prescribe me anything yet until I notice hair loss.
I'm sorry about your parents.
It's always hard coming out to family. It takes time for them to adjust and some families stay in denial. They just don't want to believe it's happening. Every family is different so I can't say how your family will react, but I hope they are accepting. As for your friend, it might just take some time for him to get used to. He'll come around. My friend once told me that, he can handle the whole gay, bisexual thing, but not transgender, so I thought I was never gunna be able to tell him. But something happened so I had to tell him. I think he was shocked, not bad shocked just like he had to process what I just told him for a second and just said something like, "it's cool, I'll still be your friend." If your friend is a true friend, he'll come around.
