Depression Supporters Support Group
This community is dedicated to spouses, children, relatives, co-workers and others who are actively supporting someone suffering from depression or other serious mental illness. Depression can bring about intense sadness, melancholia or despair that has advanced to the point of being disruptive, which can have a grave impact on the ability of others trying to help.
Depression is not contagious, but yes it is very very draining and stressful. I went through the same thing with my wife. Go see a doctor, and discuss your symptoms. The stress of helping a spouse with depression can make you sick. A low does of a general anxiety med could sort you out. But you'll also need some extra support from family, and try couples therapy (and get him into therapy if he isn't already). It makes a huge difference. Consider a therapist for yourself as well.