How is your general health level? Are you physically fit? Do you take allergy medicines (or anything else that might cause your sinuses to not react normally)?

How is your general health level? Are you physically fit? Do you take allergy medicines (or anything else that might cause your sinuses to not react normally)? Are you a smoker? Overweight? A consumer of a poor diet, poor sleeping habits, high-stress, any other poor health practices? I'd look at your health first, lots of things can make it easier for you to get sick more frequently. If you've moved recently, you may be getting new strains of rhinovirus and flu that your body doesn't know how to fight. Any way you look at it though, getting sick that frequently tells you that there is something that's just not right. I'd really recommend a visit to your doctor for a checkup / physical. It could be nothing, but it could also be a symptom of some underlying malady.