What to do?

I'm divided about what I should do. My Doc is in Australia and right until this time the flood didn't get where he lives but I've just read that the water got to his place, too. I'm kind of worried. I know I shouldn't care about it, given that I broke things up with him and he hasn't given a sign of life ever since then but still... I would be happy to know, he's fine and no harm has been done. Yeah, that's just so me, keep worry about people all the time. So what should I do? Write a mail, or just let it pass? Phone call is out, for one I've got no money for distance call, plus probably he's working so he couldn't answer anyway. I think I should just keep my concerns for myself.