Hi Susan!
I just wanted to send hugs down yonder and hope things cheer up for you soon. I get this thing sometimes where I feel good and nothing is wrong with life, then BAM it hits me out of no where....gloom and doom, something MUST be wrong but I can't put my finger on it....this is what I call anxiety attacks. It may not be what you are experiencing, but I can relate a bit
Take care and maybe a banana split is in order?