Megan, yes, I'm finding the same occasionally. When I was DIY my second time I was unaware that this was possible and I would just cry unexpectedly, or with very minor ribbing or bullying. (I've been bullied a lot) Now though I know it's possible and can stave it off usually. This is normal, and by the end of the day I actually like it. It's proof to me that hrt is working. So often I just feel even keel and when I get a surge of emotion, I love it. Today I had a disagreement with my vfx super and I almost cried during it.
Charlie Nicki, I think if you are prone to depression it can accentuate it. The ups and downs I feel are mainly happy, sad, isolation, exhileration. I have gotten depressed on hrt, but not any worse than before hrt.