the sooner you stop taking it, the sooner these symptoms will cease. at most they should last 7-10 days. if you need more advice, please post this in the addiction:substance abuse forum. there are tonnes of ppl there with lots of experience.
best of luck to you.
nick
Congratulations on getting this far with your taper. With any taper, there will come a time when the person has several episodes of 'mini-withdrawal' during the day as each dose wears off-- that is the time when it is best to just stop taking the medication altogether. As Nick said, you SHOULD feel better after a couple weeks, although there are some people who have effects lasting for months.
The 'sweats' can be very uncomfortable; you describe them as 'cold' sweats, but some people find relief by running cold water from the faucet over their hands as soon as the sweats start-- this sometimes 'breaks' the sweating episode. I have had some success treating the sweats from opiate withdrawal using neurontin (the generic name is gabapentin); this medication is pretty safe and is not a controlled substance.