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Hello Rebecca. The yellow discharge from your nose could have been due to infection or chronic common cold. It is common knowledge that infection turns the secretions yellow. But a clear yellow discharge may not necessarily mean infection . Long standing cold can lead to thin yellow discharge.
When you have a sinus infection, you may need to blow your nose often because of a greenish-yellow discharge. This comes from your infected sinuses and drains into your nasal passages. The discharge may also bypass your nose and flow down your throat.edically termed sinusitis, a sinus infection occurs when the cavities around your nose become swollen and inflamed. Sinusitis is most often caused by a virus and often lasts long after the other upper respiratory symptoms are gone. Rarely, fungus or bacteria may cause a sinus infection.