Thought it was working but suddenly seems to have stopped.

Hi! I have been on Pristiq for almost 6 weeks. I’ve had some really bad days, and some really good days in that time. The past week, though, it’s like I’m not on any medication at all. Almost constantly feeling the physical symptoms of anxiety. It’s worth mentioning that I started an online course to get a certification and that has added some stress to my already stressful life but I didn’t think that would totally cancel out any benefits id started to feel. Does anyone have any similar experience? Maybe it’s time to up the dosage - im only on 25 - or am I just doing this to myself by starting the classes and going to have to deal with this?