Sinuses worse after taking flaxseed oil...

Has anyone had maladies that worsened after taking flaxseed oil. I have problems with sinuses and after taking flaxseed oil I wake up in the morning with a sore throat and all this thick green mucus. My throat remains sore the whole day as if I am catching a cold. I've tried different brands of flaxseed oil from reputable companies and it's always the same thing. Is this "die off" or am I just exacerbating my problems.

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