Help! I need to confess, how do I tell him?

[Moco]

Ok~ I lied to him in the beginning of the relationship. He investigated me and I was caught.( No, I wasn't cheating) But issues surrounding this lie keep surfacing and I need to come completely clean. I have asked for forgiveness but need to tell him the rest. He is very critical and judgemental, this is why it is hard for me to tell him the truth. The guilt is eating me up because I want the relationship to work and I love him as I live and breathe and don't want to lose him. I know he's going to do further investigation and I need to tell him BEFORE he does. I think it would be easier than trying to clean it up later. He called, I was crying, he asked what was wrong. I suggested a face to face meeting and he said "no tell me now" I tried to tell him through my crying, he yelled at me, which made it harder to confess. I started by telling him how much I love him and that I want things to work out between us, after a minute, just as I was about to get to telling it, he said his other line was ringing and he'll call me back. Maybe my approach was wrong. How can I tell him the rest without him blowing me off? Help, I don't have a lot of time .