I think meds are a good idea if you've been this down too long and nothing else you've tried is working. Situational depression is just that. And if your situation changes and you're still feeling down, it's more than just the situation. Break ups are hard and sometimes you may feel like you'll never get over someone you love. There's healing that needs to take place. I agree that checking thyroid levels is important and a full physical work-up as some physical things can influence how you feel, energy levels, moods, etc. And, I cannot emphasize enough how important diet, sleep, reducing stress, and physical activity is. I cut out most sugar in my diet almost 2 years ago and that really makes a difference. I still enjoy sweets, but keep it minimal. I also try to eat a good breakfast everyday; something I was growing slack in and eat something substantial that stays with me, like eggs.