I agree with the above post, and medication gave me my life back. Anytime you're put on this type of medication there is an adjustment period where things can be worse, but then things begin to improve...the norm is 4-6 weeks. Never just stop these types of medications, and when you have bad or unusual side effects always contact your doctor. He needs and wants to know how you're doing and will know what the next step should be.
If he doesn't know.... he can't help you. I hope this helps and best wishes.
Unfortunately a lot of the anti-anxiety/depression medications make people feel a bit "worse" than the original symptoms. I say "worse" in this way because I felt a bit of help with the initial anxiety but developed jitteryness, dry mouth, and insomnia. If you look at my post about Wellbutrin, I asked the same question as you.
For me it took a good 4 to 6 weeks to really feel the benefits of the medication. In the interim I had to supplement with small doses of Klonopin to get through the really high anxiety parts of the day. Klonopin also helped with the jitteryness. Taking the Wellbutrin in the morning also helped with my insomnia at night.
Is it worth it? I cannot speak for everyone but for myself it was worth it. I am now virtually anxiety free. I will also say that I tried celexa. It worked but gave me a side affect that had nothing to do with anxiety and so I switched to Wellbutrin.
I think you have to weigh the costs and the benefits. If anxiety is taking a toll on your everyday life, then you may want to consider trying a medication but you would have to give it a try for at least 4 weeks before you know if it is really working for you. Perhaps you can try a different medication other than celexa?
Lastly, there are a lot of cognitive behavioral therapies out there that can help you get a better handle on your anxiety. You can learn these techniques through a therapist. There is also a good book out there called Self-Communication by Joseph Luciani which I found to be very helpful.