I sorry I took so long to welcome you, but welcome to EA!
I know exactly what you have felt like in the past and how you feel now with a drop in your testosterone (poison to people like us).
Do you have any intentions on starting female HRT? I know that once I had the testosterone out of my system and had the estrogen going, I couldn't believe the difference in my whole attitude and mental outlook on life. So calm and I would just catch myself smiling for no apparent reason, just because I felt so good. And those were just the mental results. Just wait for the physical developments.
Good luck and please keep us posted on the results of your test.