He ate too much pizza. Now he feels sick.
He has a stomachache.
His head hurts very badly.
He has a headache.
Her ears hurt.
She has an earache.
I feel like I’m spinning! I think I need to lie down.
I feel dizzy.
He can’t talk very well. It hurts when he drinks water.
He has a sore throat.
He’s sneezing and coughing a lot, and he's very tired.
He has a cold.