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Yellow, infers some infection,by merely it's color.
I'm assuming you are likely rinsing out gingerly several times per day. Do keep that up. Warm water, some salt with it may/may not be as much help as the water alone, but do rinse. It cleans out the infection.
I'm assuming you have antibiotics, is so keep taking them till they are gone please. The most difficult after extractions is generally the first 3 days or so. After that, thing will generally always be "on the mend" largely.
Take pain meds as needed only.
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