What were your first sleeping problems?
Did you have problem just to go to bed earlier that 2 or 3 p.m.?
You need to contact your physician as soon as possible to start with Zopiclone and painkillers withdrawal.
Symptoms that you have mentioned in your other topic, and I've found them as a symptoms of rebound headaches syndrome, can be also, less common reactions of Zopiclone use: rebound insomnia, depression, anxiety, and many more.
Due to the risk of tolerance and physical dependence, Zopiclone is only recommended for short term (less than one week) relief of insomnia.
You'll need to go through withdrawal period by crossing over to an equivalent dose of Valium, and then gradually tapering Valium dosage over a period of several months in order to avoid extremely severe and unpleasant withdrawal symptoms of Zopiclone withdrawal if it is done too abruptly.
For this you need to consult your physician.
This isn't a simple situation to be handled by yourself.
Best wishes!
Marija