Mild cramping, implantation Cramps?

Heather • AGM ❤️ BABY #2 ON THE WAY 🥰

9DPO, having slight mild cramping this morning, AF isn’t due until the 24th. Could this be implantation cramps?? Even been having very sore boobs, little headaches, and morning sickness.. it’s to early to test bc it’s negative, how many days past ovulation do I need to test? Or do I need to test the day before my period?