DD had a cold about 10 days ago. Was off school for a few days as was quite poorly with it. As always it has left her quite sinus problem. Thick slightly greeny snot and a cough in the morning. Trying to encourage her to drink loads and have bought a sea salt water spray for her nose. This morning she was so grumpy and very difficult and mentioned that her head hurt. No temp but wondered if I should be taking her to GP. She has gone to school but looked a little pale. Anyone has this problem?