(((HUGS))) and how about erasing his number from your phone or going for a walk or something to get out of the house so you're not there to bother with checking the phone? Your best bet is to find other things to occupy your time with right now to take your mind off him entirely. If you enjoy SIMs, you might entertain yourself with that, or another game, spend the afternoon giving yourself a manicure, pedicure, and/or facial, curl up outdoors with a book you've been meaning to read, etc. Focus on
I usually find that the first week or so is the worst...then it subsides somewhat.
Hang in there...it will get better, eventually.
Sheri