I hate it when that happens... when I tell everyone how much better I'm doing, and then immediately crash! Although, someone once told me that if you made a graph of how recovery from depression looks, it wouldn't be a straight upward line, but rather would be a jagged line with lots of little dips and peaks. I try to remember that when I start worrying about what it means when my mood takes a downward turn. In the meantime, take good care of yourself.
wishing you well,
garden gal