My only experience with NSAIDs is Aleve (Naproxen). The question you should always ask yourself is "am I ok with the side effects?" or "is this side effect significantly affecting my life in a negative way?". If it isn't working for you, ask to try something else. Usually one should give any medication a good 2 weeks. Some take longer to work, so just ask your *pharmacist* how long it should take to work or how long you should give it a good try. Pharmacists are drug experts. A family practitioner is a general physician, not an expert.

It is worth pointing out that no one should be taking NSAIDs long term anyway. They will eventually rot your gut (stomach ulcers). Research it for yourself, or just talk to your pharmacist;

I took celebrex with somewhat good results for years, and ended up with an ulcer, so I stopped.

Me either, not from a NSAID. You could be mildly allergic. Talk to your pharmacist or a nurse practitioner hotline if available.

Has anyone gotten jittery as a side effect? Did it go away?

I take Celebrex, can not stop taking them or the pain gets unbearable