This guide can't replace clinical judgement, and it isn't trying to. If something feels seriously wrong, trust that instinct over any guide — including this one.
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When in doubt, get checked. The cost of an unnecessary appointment or emergency visit is consistently lower than the cost of a missed one — this asymmetry should bias your decision toward checking, not waiting.
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Note exactly when a symptom started, particularly for anything in the emergency tier — for time-sensitive conditions like stroke and heart attack, the exact onset time directly affects which treatments are still available.
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A normal result is not a wasted trip. Ruling something out is itself valuable information, not a failure of judgement for having checked.