Hi Sameer,
My primary advice to you would be to see a doctor. I personally have been using Celebrex to do away with my symptoms, but it's not the most potent or effective (or potentially even safe) NSAID, so if you've some opportunity you should be seeing a doctor and asking for their advice regarding how to use this drug. Besides, you may have other factors or be taking other drugs which could make taking higher doses of an NSAID unsafe. Please see a doctor before experimenting with prescriptions.
Having said that, in my experience, the dose of Celebrex that you are taking is too low to have the desired effect. It's slightly lower than the dose that I take now (150 mg / once, day), and i've been undergoing a year of immunotherapy which has sharply reduced the severity of my body's immune response. When I first started taking the drug, I needed 2 doses of 200mg, each separated by 8-12 hours (for safety), in order to obtain relief. When you see a doctor, which you should do, you should ask them about the possibility of such a dose.
Also, I don't think this drug should be taken more than every other day, generally. It makes me feel weird. That's also something you should discuss with a medical professional