Hey there Southstreetunder
Welcome to HealingWell and I am so glad you found us. I am Kitt and I have been on many different AD's in the past. From what I know of Zoloft it usually will kick in to it's full therapeutic dose around the 3 week mark. Of course each person is different and if your Doctor feels it is needed your dosage may be adjusted.
I think perhaps your feeling better in 2 hours was the relief you felt in knowing you were started on a medicaiton that may help you feel a whole lot better and that is a good thing. Take care,