I understand you are using the Bitnami WordPress OS X VM, you configured your DNS to point to your public IP and configured the port forwarding in your router, right?
In that case, can you access the machine and configure WordPress with your domain?
If you continue running into the same issue, we have a Support Tool that will gather relevant information for us to analyze your configuration and logs. Could you please execute it on the machine where the stack is running by following the steps described in the guide below?
Can you also run this other command to know how the request behaves?
curl -LI yourdomain.com