Rockets, for now just take it one day, one hour or even one minute at a time to stay clean.
I like the others would strongly suggest seeing a doctor and coming clean, one thing you will always need to be aware of when seeing a doctor in the future for the rest of your life is the importance before any doctor writes you a script is you tell them you are a recovering addict. This allows the doctor to prescribe you something that is not likely to lead to a relapse.
One other thing is start going to NA meetings or AA for some face to face support, withdrawals are hard enough, why go through them alone when you can have folks who have been through them to help you along the way.