I have been on pristiq 100 mg for about 6 mths but about 10 days ago after deciding to get my hair cut short and stressing what people will think I have started to get anxiety back and teary over nothing to tbe point i cant go to work my pristiq has been increased to 150 mg and I was told my symptoms would worsen and would take 2 to 4 weeks to see any difference in my mood is this true?