Have you ever been so busy you actually put off peeing? I beleive he needs time to focus on his career and you are taking it personally. Why? Love encompasses all-not just "Hi, honey; What are you doing?"
If you know yourself and I MEAN really KNOW yourself and trust your love for him; calm down.
You need to take an inventory of yourself ; what is causing such a melt down..why are you beating yourself up because he doesn't talk alot when he is focused on something else?
Give yourself a break.
If he climbs into a cave; let him.
It has nothing to do with him...it has to do with you.
When he's busy, do the things you like to do.; bubble bath, a manicure, rest or reading.
I am positive, if you avail yourself to the "economic recovery"; perhaps he is worried about his job? Perhaps, he is worried about how much money he will make...
Nothing like a shopping spree, lunch with your friends or a day or night of pure luxury..whatever you can do to help yourself.
Making his silence-the vein of YOUR existence is frankly,an exercise in futility.
So, STOP. Inhale. Create "your time" the best way you know how.