this (very) minute
1. Right away; at once; immediately. Billy, get in here this minute and explain how my favorite vase got broken! Oh jeepers, look at the time! I've got to go this very minute, or I'm going to be late!
2. At this moment or just a moment ago. I'm sorry I can't chat longer, but I'm heading off this minute for a doctor's appointment. You only just missed Daniel, he left this very minute.