Please don't pay for his portion of the divorce...
Sounds like you are feeling really isolated and in pain right now. I would advise that you actually write out a schedule for your day and follow it, to give you some structure and a feeling of accomplishment. Nothing ambitious or achievement oriented, just something like
8 am wake, shower, eat, coffee
9 walk dogs
10 read 2 chapters of a good book or Call family for a chat
Also get out around people! Check your local library bulletin boards for book clubs, walking groups, community events. Volunteer at the library, animal shelter, or help hand out food at local food pantries. Lead a girl scout troop? Get a coffee at the local bookstore and read and soak in the atmosphere. Take a community education class on basket weaving or pasta making or hula hooping lol! Just - keep busy and get out and start to feel a little normal again.
Boy, that was a ton of suggestions. I kind of think I was giving my own self some advice lol. Well, let's both do it then!