Waiting!

I have been applying a nursing job in Australia and fortunately one of the employers I have had applied replied to my email. He did ask me a couple of questions and I answered it immediately. I really appreciate it. However, it's been 5 days after we had that conversation. I'm beginning to lose hope that he would contact me again. I'm starting to think to Call Australia to get the answer that I need. But I'm also afraid that he might get a wrong impression of me. I'm just praying his going to contact me again.