Butterfly,
I understand how you're feeling...
I've been in treatment for 5,5 months, and I've never felt so depressed in my life.
I try to remember it's not me, but that terrible disease, because in fact I know that's not me, it's not my nature. It messes with your mind (and also, how on earth could anyone feel good with all those aches and the discomfort?). I cry each day, when I hear a song, when I see an animal on tv, when I'm reading,... but mainly because I feel so bad, or because I'm angry, because I feel so alone in this, or sometimes just out of self-pity - lol...
My Dr doesn't want to give me antidepressants, but he prescribed L-Tryptophane (amino acid - it increases the serotonin levels in your brain). I must say I felt a change. Maybe you should try it?
The state of your colonic flora is also very important. My Dr told me that E. Coli is necessary for the production of the 'happy-hormones' (I don't know if it's dopamin or serotonin, or both - my brain doesn't function well these days - I'm not able to grasp scientific articles at the moment, sorry for that).
When I started treating my leaky gut about 2,5 years ago, I felt so different afterwards, sometimes I just stopped doing what I was doing and said to myself 'I feel happy right now' - that was very new to me. Now it's down to 0, but I know that some day I'll be able to feel good again.
Before starting the leaky gut treatment, the percentage of the aerobic bacteria E. Coli in my stool was 0,5% instead of the 70%-90% normal range. 99,5% was Strep. I just want to stress the importance of taking good probiotics, they're so important, they're necessary for your brain so it can produce the happy-hormones.
I wish you a lot of strength!
M