Dear Velocity:
Your feelings and emotions zig-zagging all over the place is par for the course and it'll ebb and flow if you follow a typical trajectory through transitioning - not that there's necessarily anything typical at the personal level because it's all new to you.
What seems to help is to keep things in conversation with your treatment team, here and with those to whom you turn for personal support. Also, support groups are a great place to be with like minded/impacted people.
In time (± 12-18 mos) the the topsy-turby nature of transitioning will settle into a more routine like experience, again I'm not suggesting that you and your life are routine - it is very unique to you and what you are experiencing is very important and impactful. However, part of the magic of transitioning is your ability to take on life in a fuller and deeper experience; it's in part how you grow into the real you and the public persona that results.
Please stay in touch and share - we/I love to hear how everyone is doing,
Rachel