Annonymouse, you know you have to do what is best for you right now. You are only 4 weeks out and are still raw from the pain.
If you prefer that you sleep alone tomorrow then let your H know and no doubt he will respect that. I recall a few random days unrelated to our D-Day and several months out where I wanted to sleep solo.
Keep talking to your H. Keep reading. Keep up the counseling.
We are 13 months out and it does get easier but that first year is pretty damn tough.