Contin heavines in the head for 13 days now, no other sympt feel tired by eveng. doctor said could be congestion or weakness, can it be coz of anxity?

Yes: Muscle contraction of scalp muscles caused by tension and anxiety is the usual cause of almost continual dull headaches. If this is the cause in your case, your Physician can arrange for stress management therapy and may also prescribe tranquilizer medication for a short time. A neurologist is best qualified to evaluate headaches if you have further concerns about your head discomfort.