I'm so sorry...and I understand exactly what you're going through
I think we all have days like this every once in a while.
I did just a few days ago...and it lasted about 3-4 days.
It was horrible.
I was soooooooo down and feeling the worst.
I couldn't stop crying off and on.
But, you'll get through this....it will pass....it always does.
Try to smile, even if you don't feel like it.
Watch happy movies, listen to happy music, look up happy quotes, etc.
You will be fine :)
And we are all here if you need us