I agree with finding a therapist. I had been in therapy on and off for about 6 years without ever any real improvement. Then I found my current therapist, and honestly, it's been like a dream come true. I really click with her and she has helped me so much in such a short amount of time. You need to find one that you can truly connect with. Definitely shop around. If things don't feel right with the first therapist you come to, move on and find another. Make a list and meet with each one and slowly cross each name off. I know it sounds like a lot of work, especially when it already feels like therapy doesn't help, but once you find the right one, things will start to improve.
I'd also recommend keeping a journal, venting there and on PC. You might also want to take a look at your eating and sleeping habits. My T went over a list of things with me that can make everything worse.. If we're in pain, hungry, angry, lonely, or tired, then it makes it much easier for depression to sink in. So, take a nap, get a bite to eat, go for a walk with your husband when you start to feel depressed, and see if any of those things help. Until you can find a therapist that you connect with, try to help yourself in little ways.
I'm so sorry for everything you've gone through, but you are incredibly strong. You can get through this too.
Wishing you the best
