Sweetee - bad days have a lot to do with our own attitudes. Instead of looking at this day as ruined, all alone, woe is me, go do something unusual and adventurous! Turn it around so it means something to you. I know you are going through a serious life trauma here, but much of how we deal with it is highly dependent on our attitudes about it.
Gratitude can do amazing things with our attitudes toward life. When I start to feel angry and resentful about the things that didn't work out the way I wanted them to, I wallow for a bit, then go through my gratitude list. Because the things that did work out for me are so much more than the things that didn't.
Try something new today. Go buy a pretty dress, have food you've never tried before, take a drive somewhere you'd always wanted to go, rent a movie your AH would have HATED, etc. Make it your day - all about you and your wants and needs.
Take good care,
~T