Thanks for all the replies and the support guys and gals =)
It went really well!
I was more anxious yesterday than I was today and for my first therapy session it went pretty well. I'm there to be honest and open so that wasn't hard.
I walked in and there was a clipboard with paperwork and my preferred name on a note requesting I fill it out, so I did that, and then when the therapist came out, she had both me and my mom go back with her for the first few minutes.
She asked us our concerns/why we were here, so for the first time out loud, I got to say in front of my mom that I was there for transgender issues(along with anxiety, but that's not important here for now) and then mom got to voice her concerns, and whatnot.
My therapist referred to me by just 'Mel' and used male pronouns, which made mom cry and she said how for now she'll just be using 'she' and whatnot, which I was accepting of. I mean, I've had a long time to process this, she's had less than a week....
But after the initial stuff with mum, my therapist 'kicked her out' so it was just us and we played, in her words, 101 Questions haha. Just background stuff, my relationships, all that fun stuff, talked about educating people on trans issues because they really aren't things many people are familiar with.
She really sounded like she knew her stuff, like at the beginning explaining how mom's reaction is normal though she also noted later how it's apparent mom's trying to be supportive just, like a normal parent, having a hard time swallowing it.
After the whole therapy session, mom and I went to eat lunch and I told her I was diagnosed right off the bat with gender dysphoria, and so I got to explain that to her, which led us talking about a whole bunch of trans topics. Turns out a friend of a friend's daughter came out as FtM trans! Someone in town! I want to meet him haha I don't know how much support he has/trans friends he has so I'd love to meet him and offer him some support.
But she asked me all sorts of questions, like if I'd want surgery, and I explained to her what testosterone does and that I've always felt this way, and she asked me if I'd want surgery and treatment or something in the future and I told her I probably did.
So I covered a LOT of ground today with my mom and that's important to me =P Don't know how the rest of the family will be, but so far... I'm having a lot easier of a time than some transfolks do which I'm super thankful for... I have a pretty good family, this is just obviously a transition for everyone.