I'm An Opiate Addict And I've Suppose To Go To

I'm an opiate addict and I've suppose to go to methadone clinic Friday..however I couldn't find any opiates over weekend so I did a little crackcocaine on last Monday and a little meth on Saturday can you please give me any advice on how to get these 2 substances out of my system..so I can get back to my normal life..its been 8 Years of opiate abuse since I lost my son Chris @ 19 yrs old