period out of whack

Ashley • Caffine ☕ Chaos 🌪️ & Cusswords 🤘

my period has been on point since after I had my first child 8 months ago.. now im 6 days late and I've taken 3 pregnancy tests and all were negative.. what could be going on?? .. I've been feeling nauseous, and breasts and sore, and cramping , so I don't understand.. any ideas .. comments.. clues?