Celexa and alaska

I have been on celexa for 4 days I know its not a long enough time for the meds to "kick In" but i am terrified and waiting for something bad to happen. I have struggled with terrible panic attacks since my pregnancy in o6-07 and they have lingered on and gotten worse. I was ok and happy to finally take the initiative to get better, I don't like even taking Tylenol so tis is a big deal for me. I was prescribed 10mg and have been only taking 5 of the 10 to wean myself into this drug.. I wish i could know what to expect and all i feel is nauseous, weird and shaky and last night i couldn't fall back to sleep i felt a lil dizzy is this normal?? I hope i don't have any vision loss also!