Did you file a police report over the stolen meds?
I'd call my doctor and tell him/her what is going on. Especially if you have cardiac issues. Good luck, honey...
These medications have been around forever. They are all available in generic form. If you don't have a pattern of abuse and the doctor is agreeable, you can just pay for the script. The percocets should only be $20 - $30 at most. If there's a history of these kinds of problems the doctor and pharmacy will probably not be much help.
There's not any real treatment for withdrawal other than riding it out. If your intent is to get off these drugs, let us know. We can help you through the process.
Cheers