First thing, go to a doctor. You already did that. You probably have an allergen, or more likely, mold lodged in your upper sinuses. A saline rinse won't work, because gravity takes over before the saline reaches your upper sinuses. A Flip-Turn Sinus Flush will work, because it uses gravity to get saline into upper sinuses to rinse out the problem
The Flip-Turn Sinus Flush is mildly risky, because you have to bend over to do it, preferably in a shower, but you can also do it outside on soft ground.
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