Hi Amanda,
Hugs to you and congrats on your 30 lb loss!
Please remember that a significant weight loss will also result in significant shifts in your hormone levels, since fat stores estrogen among other things, and this can affect your mood. Your metabolism shifting can affect mood as well. And it's true that many of us "hide" behind our weight -- I know I found my slimmest times to be the most intimidating in some ways, because I became very "visible" to the world and it was scary.
Just keep the lines of communication with your doctor and therapist wide open as you experience these mood issues. Try journaling if you aren't already -- it can help. When you are feeling really down, take care of yourself -- warm baths, quiet time, a fun book/movie, etc. If the down moods last a while, please get help with that -- depression can be very debilitating (as I'm sure you know from family experience), so if you can "nip it in the bud," so to speak, that is a good thing.
Please reach out if you need to talk.
