Depression?

I've spent the last week in bed.  I'm beginning to feel ADD is catching.  I have no energy left to help myself or my husband.  And no motivation at all.  The house is a mess, of course, so I get up for half and hour at a time to try to clean up, put things away etc.  Marriage counselling is useless if not harmful; she tries to make him feel guilty as a "motivater" to make him more responsible, even thought I've said that it doesn't work that way.  No anger left, just indifference.  At 70, I'm too old to start over.  Don't know what to do.