心配なの

I'm worried

→ 心配だ
phrase Uncommon #13,375
I'm worried A conversational sentence ending used to explain or emphasize that someone is worried. Depending on context, 心配なの? means “Are you worried?” The の ending can sound somewhat feminine, though it is not exclusively used by women.
JA: 明日の試験が心配なの。
EN: I'm worried about tomorrow's exam.

すごく心配なの

I'm really worried.

あなたの身体心配なの

I'm worried about your health.

何が心配なの

What are you worried about?

今はひまわりの人心配なの

Right now, I’m worried about the people at “Himawari.”

— 崖の上のポニョ (2008)

心配なの

I'm worried.

— アメリ (2001)

心配なの

Are you worried?

— 鶴は翔んでゆく (1957)