The First nights of separation are so hard believe me I know.
That's why keeping yourself busy is critical.
That being said because he said no contact that is not true. Every sitch is different, but you will find that in most cases the WAS will find a way of making contact. Hold to your guns and let him initiate. You might be surprised how fast he breaks his own rule. Also be prepared for a long time with no contact. Bottomline give him time to see what he is missing, and give yourself time to develop new traits he'll find desirable.