Well, I am not a doctor but since I have also gone for sinus operation I have heard that the recovery process differs for individuals. I had my sinus surgery back in July last year (2008) and it took me well above 2 and a half months to recover and feel the difference and interestingly I feel like I am still recovering (even after 9 months have passed). So, I have a strong feeling you should wait more. Since there is brown fluid pouring out of your nose seems like your healing process inside the nasl cavity is not completed as yet. The best thing would be to get in contact with the doctor who operated you. Hope that helps.