You could well have done permanent damage, you were lucky that it didn't seize up completely. It has probably overheated too which may have distorted the cylinder head.
If it was me I'd get someone who knows about cars to check it over. At least carry out an engine oil and filter change, and make sure that the coolant level is ok. If it then seems to run ok you may have been very lucky. If it does run ok then get it serviced properly, and regularly serviced in future.
Modern cars take an incredible amount of abuse but no car will continue to run forever without servicing.
ChicksFan
May 2012
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.