How'd you tell your SO you're ready?

R
I joined this app to keep track of my periods and within the last two weeks all of a sudden I really wanted to start trying to have a baby, like I bought tests on Amazon serious... My hubby is totally cool with it but I don't think he realizes I'm serious! We've been married almost 3 years, have careers, bought a house and talk about our future children in a lighthearted way. How'd you tell him you aren't joking anymore? Is it normal to just all of a sudden want to start trying? We haven't used protection in months but now all of a sudden I care about ovulating and stuff!?!