EPS? Flu like symptoms

Yesterday I had flu like symptoms that came out of nowhere. My whole body was SO SORE, I had pressure in my head, stuffy nose, and my throat hurt. And today, only my throat hurts. I experienced this at 8 DPO with my first baby and I was 7DPO yesterday when this happened. I’ve also had stabbing pain in my back, a pinching sensation in my overies, and leg cramps.