I second soidhonia's idea of getting a physical. I found I had low thyroid (which can cause depression, tiredness, weight gain, etc.) & pernicious anemia (same symptoms plus vertigo) so added to my bp meds was thyroid med & high doses of B-12. I also found out I was insulin resistant & needed to follow the diabetic diet as that can be a precurser for diabetes.

You do have circumstances that will most likely make anyone feel depressed, but learning to cope with disappointment & heartache is, unfortunately, a part of life. If you have a physical problem or clinical depression, meds can help.--Suzy