Hello @Molly22 it sounds very worrying for you so I hope you can put in place some supports and reassurance in the days before your husband leaves. I live alone and sometimes get very anxious about the lack of contact too. Can you ask your kids to check in with you daily even if it's just SMS or email? There are also some social threads here on the Forums where people chat during the day or check in with daily achievements. You can set up notifications so you get an email when someone replies or tags you - it can be a welcome break in a lonely day. 

What sort of fur or feather or wool babies do you have? They can be good company. 

Most of all @Molly22 I wanted to add my voice to those saying "welcome" and I hope you find some comfort here. There's probably a lot to take on board with your new diagnosis and ways of coping and the Forums might provide useful information as well as mutual support. 

Best wishes

Dimity