Welp. That doesn’t happen often

So my husband & I aren’t trying to get pregnant until baby girl is 2.5-3. We want our kids 3 years apart (only one in diapers). Well tonight after some romance and some (much needed) laughs we got intimate and didn’t use protection. I’m in between my period & my fertile window (fertile window starts in 4 days), but now I’m all in my head. If we get pregnant I know it’s what God wants for us & I’ll be happy, but I’m not sure I’m ready. Has this ever happened to y’all where you ever got so in the moment you forgot to use protection?