I had exactly the same experience while depressed. I'm really sorry.

It's scary. But depression and the complex thoughts needed for creative writing do not go together well, as I'm sure you know.

Please try to give yourself a break about it.

I'd still been trying to force the writing (and work full-time, alongside a horrible boss). It seemed the only good thing in my life. But it seems crazy now, the way I ignored how ill I'd become and pushed and pushed myself.

Meds helped me enormously. I'm still taking an anti-depressant. Not ideal, but maybe I can come off it someday.

Well, the good news is that my writing is going better than ever.

Much love to you.

Try to have faith in the process, and meds if you can take them, and your therapist.