Anyone else?

AF is due tomorrow & the last 3 days I was cramping on/off & they’d only last a couple seconds- nothing like normal period cramps. My boobs were extremely sore & swollen too. Today- nothing except diarrhea this morning & small waves of nausea. My SO & I BD on the 6th, used pullout method. Did I just experience implantation cramps or is AF just making a change? I normally get sore boobs a whole week before AF then it’s like surprise, she’s here! Anyone else have these symptoms?