Ah, i wonder if that's why he wants to know who you've told, because of the work situation and that there's a chance OW will hear some things she's been kept in the dark about? hmmmm. Anyway, thats by-the-by.
I'm sorry you are going through this, the pain is awful, as someone upthread said, almost physical. I found various coping strategies to help get me through the first few months of my break-up with bastard cheat a few years ago. Talking and crying it out with my family, the safety net they offered was amazing. DVD box sets - for when i was on my own, didn't have to think too much and could drown out my own thoughts. I think i got through all the CSI's, buffy, Angel etc. anything, not normally my thing but it helped. Distractions i suppose. Doing the practical things, sorting out finances etc with a view to new life ahead, and finally focusing on myself, I got a new job, threw myself into it, got promoted, then promoted again and i found i had a bit of a career. It wasn't what i had in mind but it all helped to rebuild my confidence and self esteem.
I was 35 when this happened and felt very worried about the future, i didn't have a decent job, no children (thank god with hindsight) had student debts and felt completely worthless. I couldn't see what kind of future was left for me....that was 5 years ago and a lot can happen in a few years, i have met and married someone wonderful i have a 2 year old and another one on the way and my life is way better than it ever would have been with my XDP.
sorry for the ramble, I suppose what i am saying is that it will get better, life will go on and you will be happy again. this bit just sucks and its awful that you have to go through it, but you will come out the other side. Take one day at a time and be kind to yourself.
xxxxxx