I don't know what medicine they gave you, anti-depressants worked wonders for me and my mom without side effects. My mom had terrible depressions and went to a big name neurologist from here because she had terrible anxiety disorder and she's still taking medicine but she feels now a million times better and I can totally see it. I had massive depressions too and went to see her doctor, although I could have seen a psychiatrist but I had confidence in that man because he fixed her so I started going with him, he gave me a small dosis of medicine with the weaker substances and slowly going up to the stronger ones until I felt better. I went to see a psychologist before that for like 10 sessions but she told me things what I already knew and told me to do x and y things that I don't feel like doing in the first place because I'm depressed, and if I don't do these I'm going to stay like that. I remember that after each visit I ended up even more depressed. I went from wondering why I'm lost with no goals and not having friends or girlfriends feeling down and miserable most of the time, to actually have goals in life and to be probably one of the most invited to hang out and to parties in college and getting the girls I want. All of that because I never felt like doing better things, the medicine put me in the mood of act different and in a more positive way. Basically if you are feeling in a negative way, only negative things come from it in a never ending cycle; but if you are feeling in a positive way, you know, positive things come from it. The only thing to worry about the medicine is that they might take a lot of time to work. That's right, there is a process to slowly take lesser dosis but I think it's right to say to be careful to suddenly stop them because you could end up feeling even worse. To OP you already said that you are not healthy, to feel too stressed in your job and you feel often fatigued. You could start with a healthy diet, go to the gym, seek for another job if it's too shitty, etc.