Did Lexapro Work for you? Side Effects?

I have been prescribed Lexapro for anxiety and panic attacks... today is my 7th day on it... 5mg for the first 3 days and now 10mg for the past 4 days... im still feeling "out of it".. like im in a haze all day... Has anyone else used it and had this feeling? Did it work for you? HOw long before i will feel normal again?