I have been on Zoloft now for 5 weeks for anxiety. I have slowly worked my way up to 50 mg. I have been at 50 mg for a little over a week and I felt great, but yesterday and today I feel a little anxious. Not like I was before the Zoloft or while trying to get my body use to the Zoloft (that was horrible anxiety!), but it feels like it wants to come back. Should I talk to my Dr. about going to 75 mg?? How do you know if you need to increase it or just wait and see if it will work?