胸むな騒さわぎ

noun, noun or participle which takes 'suru', intransitive verb

uneasiness; vague apprehension; premonition

A feeling in one's chest that something bad might happen; often used when there is no clear reason for the worry.

• 何なにも悪わるいことはしていないのに、胸むな騒さわぎがして落おち着つかなかった。

  Even though I hadn't done anything wrong, I felt a vague uneasiness and couldn't calm down.