I have a 3 week old baby and during the day she settles in her crib... i have blinds open TV on and generally feel OK getting on with housework etc... when night time comes I get this depression feeling which doesnt disappear until the sun comes back up at around 6am...Is this normal? Also only getting 4 hours sleep a day when my partner takes over as I find it impossible too sleep when she sleeps as she is always unsettled at night ... is it normal to live on 4 hours sleep a day at this stage and has anyone else felt this weird alone depression feelinget at night?