pain meds

Im confused, what pain meds are we allowed to be taking since having the surgery? My rheumy said that I wasnt suppose to be taking percoset anymore and gave me codeine which isnt doing a darn thing for me. So what can we take ???

Percoset is made with oxycodone and acetaminophen (the incredient in Tylenol).  This is very effective for pain and should not present a problem for RNY because it does not contain NSAIDs.  Its sister drug Percodan contains aspirin (NSAID) rather than acetaminophen.
Likewise, Vicodin (also called Lortabs) contain hydrocodone and acetaminophen (no NSAIDs) so this pain med should also be acceptable for RNY patients.  Of course, it's always up to the physician.
By the way, the use of oxycodone in Percoset/Percodan does not have the same addictive properties of Oxy-Contin.  The oxycodone in Oxy-Contin is formulated as a time-release drug.  It is the breaking up of Oxy-Contin that becomes problematically addictive because users want the high and will crush the pills for a more immediate effect.
If medicines are used judiciously, and as appropriately prescribed for the condition at hand, addiction is not usually going to occur. 
I take Vicodin, up to three times daily, as needed for severe back pain, and at the lowest dose 5mg hydrocodone/500 mg acetaminophen, and have experienced no tolerance at all.  I also don't use it excessively with the intent of getting high.