I walked around my house depressed for three months, when my baby went to kindergarten!
I know some won't understand that, but it was the first time in my whole life I was alone.
I thought I was going to weather the empty nest better, but when my last daughter of three, got married, I didn't react right away.
Two months later ended up in e.r. bc my thyroid was out of range...again, and b-12 was too high...so giving me a false high.
Got the blood straightened out and had to have my head checked! lol
Suddenly, I wasn't so good with the, 'everybodies all grown up' and don't really need me, thing.
DH needs me, but one of those obstinate ones that will not show it.
It's been 7 1/2 years now and I love having the house all to myself to sew.
If your sadness persists it may be more than an empty house,...mine was. Too many ghosts rattling for it to really be empty.