New to this!

heidi • I'm currently pregnant with my third. I have two beautiful girls that we conceived while actively trying not to get pregnant but God had better plans!
I'm 35, this was our first month ttc, we have 2 girls ages 4 and 6 that we didn't try to have, actually was on birth control pill with my second! I didn't expect to get pregnant my first month trying, but I can't help but feel like I failed. My period is due Saturday, glow says it's due Sunday. I took a test today, not bc I really thought I was pregnant, but bc I had a few weird symptoms. I was crying on Monday, which isn't like me, I spotted one brown spot 2 days, and I've been so tired. But I've also been sick, so that's probably why I'm tired! I don't want to obsess over this, as it's ok if we don't have another even though we want to! Anyone have any advice on how not to obsess?