I knew the current one I'm on was doing something (took about 6-7 weeks to level out) when I became able to enjoy a few things again. Before, I had no interest in even eating. It's like I was just existing. It isn't 100% back, but it's getting better.
*nods* The flat feeling is there. It makes me feel unmotivated to change my life which is a contributing factor to my depression in the first place.
By nature, I am very sensitive and emotional. Not on this med. I force myself to be but I don't
feel it like I used to. I care, but don't feel the emotions. I feel more logical now. "I love this person, so I know I care, but I don't feel it." Kinda blows.
Are you in therapy? Learning to change my behaviors and identifying what choices I make, the coping skills I used, and how they affect/ed my life is helping.
Part of the daily struggle is getting outside of your head - I think you mentioned when you're active you feel better, or more OK - that may be key. Being engaged in something most of the time. My Grandma was this way until the day she died and I believe it was what saved her from depression. She was always on the go, or knitting, or cooking or baking.
It obviously takes time and patience to find the right med combination but have to keep working on it, believing that there is probably a combo that will work.

We just have to keep trying.
Thank you for starting this thread. Hope you find the right medication or treatment plan soon, and start feeling better.