Emily,

You need to take some time to be alone.
This back and forth crap is driving you batty.
Stop letting your moods be based on what HE is doing at the moment.

Back up a few days...

When he was supposedly gone, it took us a few DAYS before we could even get you thinking about Emily again.

Now with one phone call, you're lost in the whirlwind again.

Stand up and take control.

If that means you tell him not to call you for the next week, 2 weeks or month SO FRIGGIN BE IT.

Your responsibility is to yourself and your daughters at this point AND THAT IS IT.

If you were stronger, I would have different advice.
But right now, IMO, your focus needs to be on yourself.