Hey Misty, massive hugs. Been there, done that, bought the t-shirt. What you are feeling right now is completely normal honey, and I'm so sorry you are having to go through it. I'm not sure what to say about how you are meant to feel, apart from you are meant to feel exacty how you are feeling. You are coping with this the only way you can so don't beat yourself up.
I also felt relief; think I said in an earlier message that I kind of went really calm. The same day I was chatting to our older boys when I got home, I ate, I managed to get straight to sleep. Next day, talked to lots of people, etc., etc. Day 3, hit me like a sledge hammer. I woke up and felt completely dead yet intensely miserable. My DH also had the time off work; I couldn't even look at him. I ended up getting on a bus and going into the town centre, then sitting in a church yard for 4 hours on my own. I didn't eat or drink, didn't even cry, just sat and felt completely lost. But it was what I needed. I managed to come home and then talk to DH, about everything. Even stuff I was scared to admit to myself, stuff I was ashamed to say. It helped so much.
Anyway, why am I telling you this? Not entirely sure! Maybe it's because this is not the way I deal with things in RL, and completely the opposite to the way I would normally cope with stuff. It caught me off guard but I just had to go with it. So don't be expecting too much of yourself; you might really weird yourself out in the next few days, but you will survive. You can do this, horribly hard though it is.
And call DH if you need to; he may want to be back with you as much as you want him back!
Remember, you have a lot of love and understanding right here too. ARC do help if you feel up to it, but they'll be there in a week or a month so wait till it's right for you. Take care xxx