worrywart
🇺🇸
/ˈwɜːriwɔːrt/
🇬🇧
/ˈwʌriwɔːt/
a person who often worries about things, especially things that are not very important
My mom is such a worrywart; she's always stressing about something.
私の母は心配性で、いつも何かについてストレスを感じています。