My head has been sore and my nose blocked up for over three days now. What should I do?

The most likely cause of your symptoms is blockage in your sinuses.

Inflammation in the upper nasal passages can cause a blockage to the drainage system of your sinuses and as pressure builds up within these cavities, headaches can arise.

To help overcome this, we would recommend a menthol containing nasal spray. This has the advantage that it can be used for longer than the normal synthetic nasal sprays. I hope that this information is helpful to you.