•  I don’t feel very well. 我身體不舒服。

•  I feel kind of sick. 我好像有點生病了。

•  I may be coming down with something.
我大概生病了。

•  I feel really ill. 我真的很不舒服。

•  I’m a bit under the weather.
我有一點不太對勁。

•  I might have caught a bug.
我可能感冒了。