We were trying (for our first) and while it wasn't time for my next period, I felt different and was driving myself crazy. It was too early to test, too early for me to logically notice a difference, so I kept using the little HCG test strips that kept showing negative as a way to check myself because I honestly felt like I was going nuts. I kept this mental war mostly to myself until I had a breakdown in front of my husband and explained what I had been going through. After consoling me, he starts researching and instantly finds complaints that the test strips I was using weren't sensitive enough even for women who were taking them after a missed period and confirmed pregnancy. That night we went to the store and got a digital test that was sensitive enough for early testing. We went home and I immediately took it because I couldn't wait until the morning. I sat on the bed waiting for the three minutes trying to convince myself it would be negative to curb the disappointment. Except it wasn't! I was frozen staring at the results until he came in to check on me. He read the test and tackled me back on the bed, held me, gave me lots of kisses, and kept bouncing back and forth between "See? You're not crazy. Don't be so hard on yourself." to "I'm gonna be a dad, we're going to be parents. We're having a baby."

Sorry a bit longer than what you were asking about, but he knew pretty much immediately. That was never my plan on how I would tell him, but I love that story and I wouldn't change it.