Bowl of very hot steaming water, float a drop of eucalyptus or teatree oil on the top. Drape a towel over your head to enclose the bowl as well and breathe in the steam. Your nose will run like Cathy Freeman and relieve the pressure a bit. Massage the joint at the top of your jawbone gently with fingertips on both sides to release ear/sinus pressure too. Repeat every couple of hours.