For example, a churning stomach and flushed face can feel like you're in love in a romantic setting but will be interpreted as 'feeling ill' if you are in bed with a thermometer in your mouth.
A stomach ache might signal a gut infection, or it might feel like homesickness if you are away from your family.
A rushing heartbeat could be interpreted as excitement when you're on a rollercoaster, acute anxiety if you're giving a speech, or simply that you've drunk too much coffee.