anxious thoughts and panic from side effects...

Took first dose of celexa 20mg before going to bed last night. Baaad mistake. Woke up at 03:00 in the morning with a panic attack, thought I would throw up. Thought night time would help subdue the side effects. Some dizziness noted. Shaky in am. some nausea. Nervous to take anymore. Will try 10mg during the day for 3 or 4 days, then try and increase. Absoulutely hate trying new antianxiety/antidepression meds out. Anyone feel like this also