feeling "painful"; normally used to describe the painful feeling of losing something (especially money or property)
Definitions (粵典–words.hk)
形容詞
形容賣走或者送走一樣價值高昂嘅嘢或者心頭好時嘅心痛感覺 to describe the pain when one let go of something valuable or sentimental; literally: the flesh is aching
Definitions (Wiktionary)
verb, literary
to suffer pain in the flesh or body
verb, regional
to hate to part with or give up; to be unwilling to let go of; to begrudge (syn.) 勿舍得, 舍不得, 𣍐省得, 不舍得, 𫧃出得, 舍勿得, 心疼, 唔捨得, 唔舍得, 捨勿得, 𣍐出得, 𫧃省得, 捨不得, 毋甘, 不捨得, 勿捨得, 肉赤, 吝惜
Common cold is different from a flu: you will get a lot of nasal secretions in a cold but you won't feel that sick. In contrast in a flu you would get muscle aches and fever, and feel a lot more sick.