I am so sorry for your distress. I suffered a long time with depression before I finally found a psychiatrist and therapist. I also chose to use medicine for my depression. It has made the world of difference for me and I feel like it changed the quality of my life. I still use prayer for help during difficult times, but I feel God led me to a wonderful therapist and doctor and I availed myself of the medicine they suggested. I will be praying for you.
Mary : )