have to go to the hospital
病院に行かなきゃいけないが時間が過ぎていく。
I need to go to the hospital, but time is slipping away.
病院に行かなきゃ。
I have to go to the hospital.
トムは病院に行かなきゃいけなかったんだ。
Tom had to go to the hospital.
病院に行かなきゃいけないの。