One other thing I would suggest is to look into flossing your elbow. Do a YouTube for "voodoo floss". It really helps.me.when I have some elbow issues.
If it doesn't clear up soon, you may want to consider a corticosteroid injection as mentioned above.
Ibuprofen works well, but when it doesn't do the trick, I switch to Voltaren (diclofenac sodium) or Cataflam (diclofenac potassium).