If your h calls, let it go to voice mail. If he texts, let it go for a bit. You do not want to appear as if you are sitting there waiting for his communications. In fact, leave the messages go for an hour or two and then respond back. If he asks why you didn't pick up right away, say "I've been busy".
When you do speak w/him, listen to what he has to say, offer no advice and try not to be sucked into an argument and do not let him hear how upset you are if what he has to say is upsetting. If the conversation isn't to your liking, say "I have to go now and leave it be".
Focus on today and allow the future to reveal itself when it is ready. Worrying about whether he's going to call or not elevates your anxiety level. Breathe, stay calm and find things to keep your mind and body busy.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.