Hi Anxiety, extreme anxiety, can cause all sorts of things. The things you experienced while taking celexa sound like they were related to celexa.
Have you had a physical exam and blood work to make sure there are no physical problems causing or exacerbating your symptoms?
Have you had any therapy to help you deal with anxiety? I understand that therapy alone isn't going to get your anxiety under control at this point but maybe when the meds make the symptoms manageable therapy can give you a long term solution. Good luck.