It has been my experience that mental illness is magnified 100 fold with alcoholism. I don't have clinical depression, but do have extremely depressive episodes that are part of a cluster of issues associated with PTSD. SSRI's don't work so that's out. Without a doubt drinking makes my symptoms far worse and usually ends up making me suicidal. Drinking causes brain damage and a kind of malfuctioning of my dopamine response. When feel good hormones aren't released in a healthy, normal way I definitely am more susceptible to depression.
Congrats on 10 days and I'm glad you are seeing improvement with not drinking. I try to remember that all feelings change, good and bad. And that its normal to have bad days. And its normal to be emotionally all over the place for the first year....for me. The key is, don't drink, no matter what.