How did you “know” you were pregnant before missing your period / taking a test?

We have a 9 month old and know we at least want a second. We aren’t avidly trying to conceive but we aren’t preventing either, it’ll happen when it happens. (I’m aware 2 under 2 is hectic. 😂) It’s possible - due to timing of events & ovulation - that we could get pregnant (I know there’s no guarantee) and I’m still about 6 days out from my period. I’ve noticed/felt 1-2 small things that pique my radar but honestly, I think there’s other explanations for my case at the moment. 🤷🏻‍♀️

My mother has shared in the past that she knew she was pregnant with my siblings. 🖤Out of curiosity, how could y’all “tell” or “sense” or knew with absolute confidence you were pregnant before missing your period or taking a test? 💜🖤