( informal ) to become / feel very anxious or upset about sth
GET (YOURSELF) / BE IN A STEW (ABOUT / OVER STH)
Meaning of GET (YOURSELF) / BE IN A STEW (ABOUT / OVER STH) in English
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005