Depression crushing me

Hi all, I'm having a really hard time. I'm 19 weeks and 3 days, and I am absolutely under water. I cry everyday, I don't want to do any of the things that I love. I've passed out a few times from an old condition, but the oppressive sadness has me so worried. Has anyone done anything that helped? I don't want to hurt myself, but I certainly don't want to be here. I feel so alone, and it makes me so sad that I can't have fun and bring joy to my two year old like we did before I was pregnant.

I'm on meds and I see a therapist, but it's just not working like it used to. I feel so helpless.