LM337 voltage regulator outputs different voltage than calculated
The numbers seem correct, as do the capacitors. Check the regulator pinout that you are using (it is different from similar positive regulators) and double check the resistor values if the pinout is correct. 



Edit: since it appears you would be better served by a positive regulator, I suggest you do a parametric search at a distributor or series of manufacturers. Many parameters are important and modern LDO regulators tend to be much more specialized in terms of a combination of max input voltage, current (quiescent, max), power dissipation, package type, max and min output current and so on. 

Just for example, the LP3869 but there are thousands of possibilities so chances are it will be sub-optimal in some way.