SM - you will deal with it the same way that most do
At first it will feel like a juggernaut has hit you. Then you will be weepy and sad, then perhaps angry and your DH for letting you all down.
The you'll have some days when something makes you laugh again and for a short while you'll be happy, then a few days when you feel down again.
Gradually over time the good days will be more and more frequent and the bad less and less frequent. Then one day you'll be so used to being happy that you'll remember with surprise that you haven't had a sad day for a while!
Its all part of life sweetie! You will survive it like countless women before you and countless women after you
You never know one day you might even meet someone else and have the happy life that you and the boys deserve so much!
I've been through all that you have and come out the other side - like many others on this site!
It is painful but you will get there. And being safe is such a nice place to be