I'm a few days ahead of you in terms of days since my loss, OP, and it still doesn't feel real to me.
I keep forgetting he's gone, and every time it comes back to me, it hits me afresh.
Have you had a massive, blubbering cry yet? I can only weep for a few minutes at a time, and feel like I really need a full-blown, hours long, lying on the bed sobbing session, but it just won't come. I was speaking to a friend who's a counsellor earlier, and she assures me that a) it will happen and b) it will be cathartic and helpful when it does.
I think that feeling of detachment is something your brain does to help you cope initially so maybe not a bad thing while there's stuff to sort out.
Have you had the funeral yet? Some people find that helps, although I can barely remember DP's.