I'm late.
我怀孕了。

late 已故的，已经去世的
His late mother was a doctor.
他已经去世了的母亲，以前是医生。
I knew his late brother.
我认识他已经过世的哥哥。

of late 最近，近来（=recently/lately）
How have you been of late?
你最近怎么样啊？
We haven't spoken of late.
我们最近都没有说话。

late in the day 为时已晚，已失时机
He started working hard much too late in the day -- he couldn't possibly catch up.
他太晚才开始努力工作，不可能赶上了。
It's too late in the day to start studying -- your final exams are next week.
现在才开始学习已经太晚了，下周就是期末考试了。

sooner or later 迟早，早晚有一天
Sooner or later you will have to make a decision.
你早晚得自己拿个主意。