Hugs, Florence,
I remember one of the times I quit smoking (lol) I took Zyban/Wellbutrin. It's an antidepressant (SSRI), but prescribed for smoking cessation. I quit taking it because at the time I was still drinking (a LOT) and I was worried about combining the two (obviously not enough to quit drinking...). I did notice that it made me feel more "evened out" but it's hard to judge because I was drinking as well, which I think messes with any medication.
I don't know that it's something that would be appropriate for you, but you might ask the doctor about it. It's apparently also prescribed for Seasonal Affective Disorder.
Whatever--I'm certainly not one to jump on meds first thing, but I thought of it just because you mentioned quitting smoking (good for you on that, BTW!)
Hugs, I'm sorry things are feeling lousy right now.