i had FESS with SEPTOPLAST surgery 5months before for Sneezing and running nose .After surgery 3 months my problem(sneezing and running nose )continuous.But now i have no sneezing and running nose But i have Headache now.Before surgery i have no Headache. now i am facing severe Headache everyday.What i will do? Note: Befor this(Sinus problem)alsy.two months after it has completely cured.