Liquid Discharge from nose. It means?

Hi, for around a year I am facing a problem of yellowish water discharge from left nose. For last 2 to month it has become very frequent, 2-3 times in a day sometimes. Even sometimes when I wake up in morning, I notice that yellowish power is accumulated at the opening of nostril. In the day when it happens, it happens so fast that I release it when the water drop is at the tip of nostril and then more drops keep coming for around 5 min. At times when sneezing happens then also sometime this discharge starts. Also when this happens then for sometime I also feel nose blockage. I discussed this problem with the physician in my office and he told that the nose is reddish from inside and I should consult with ENT specialist. Recently has got tested the fluid and the result is glucose 112 mg/dl protein 6.3 gm/dl what does it means?