you will need to wait at least a month before the effects of the celexa sink in truly. Trust me Ive been on it ( for anxiety , panic) for the past 2 years.

You NEED to check out

Panic Attacks, Anxiety Disorders, Treatment, Forums, Blog

All the symptoms you're mentioning are classic's of anxiety / panic...
you'll be shocked when you check out those forums, and realize you're not alone , you'll instantly feel better as you read those forums...trust me

Its a very friendly community there and it helped me on the path to recovery from anxiety. Now I can smoke, and realize it was the panic that made me panic , not the weed.