Side effects are a very individual thing. Temperature changes such as usually sweating are a common side effect of antidepressants. Chills can be too but are also a common side effect of anxiety, so there's that. But I'm wondering, you say you have mild anxiety. You say you've had dizziness and headaches for 5 weeks, which would go more along with the chills and shivering than taking an antidepressant. But I have had chills while I was on Celexa, and not nearly as much since I stopped taking it, so maybe it does cause this. But again, anxiety is mostly thoughts, and those thoughts if they become bothersome enough can cause physiological symptoms. You say your doctor said it might be worrying too much. How much do you worry? Are you overwhelmed with irrational fears? Do you find yourself obsessing about being afraid to do certain things that didn't bother you before? Anxiety isn't a secret, you know it when you have it at the clinical diagnosis stage because the anxious thoughts are interfering with your happiness and functioning. You don't put someone on an antidepressant because the doctor can't figure out what's wrong unless you are in fact suffering a great increase in anxious thinking that preceded these physiological symptoms. Further, mild anxiety doesn't call for medication, which as you are finding out isn't easy to take and isn't easy to stop taking. It comes with side effects that sometimes we get used to and sometimes we don't, that sometimes are just start-up and sometimes are permanent as long as we take the med. That's why meds are for people who are having significant problems functioning and enjoying life because of their thinking. Maybe that's you, but if I had mild anxiety, I'd be seeing a therapist, not taking drugs. Personally, I'd want to see a specialist or a different doctor about those headaches and dizziness before attributing it to anxiety and going on medication in the "hope" it's anxiety. Because antidepressants don't treat illnesses other than those caused by anxious or depressed thinking. So tell us, just how bad is this anxious thinking you're having, because there a ton of causes for headaches and dizziness other than anxiety.