hi there, have you been properly diagnosed with your problem? have X-ray and MRI been done? if painful area increases after 2 month even after taking your NSAID, it can be a good idea to talk with your doctor and figure out what is going on there... there are few possible reasons for pain and it must be diagnosed first and then treated, treatment can be different from just taking anti-flam.
seeing experienced physio specialist can be good as well... i know for a fact few cases when pain in elbow was caused by problems in neck and then treated accordingly... I would not delay a visit to a specialist