Stage
Phase
noun
The current step of the floor is at the second stage. Now it's at the third stage. Now it's in the final phase! Nice!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
彼氏は、私が妊娠からかなり経った段階まで妊娠の事実を伝えなかったことについて私を責めました。
My boyfriend accused me of not telling him I was pregnant until I was in the advanced stages of pregnancy.