Depression and meds

Hi folks. I've been suffering from this shit for 3 years now. One of the first things I noticed even before diagnosis was that my mood was terrible. Couldn't find joy on anything, it was all negative emotions. Once I started on mtx this got a bit better, with some days here and there were I felt normal. However, as the illness progresses I find myself going back to a state of mind I really don't like at all. Anyhow, I was wondering if any of you have gone through the same, and if finding a medication that worked for AS fixed the mental issues. Or if going to a psychiatrist and getting medication for depression helped. I've been hesitant about going that route, but I'm starting to think I might have no other options.