Implantation cramping?

Jamie💋 • mom of 2 Boys on earth, ❤️ 👼🏻 3/9/19 👼🏻 1/2/20 👼🏻 4/14/20 🤰🌈 Due 3/2020
So right now I am about 5-6 dpo. I have felt this sudden sharp pain in my uterus all day now. Sometimes it's bad and sometimes just an ache. Has anyone ever experienced this and been pregnant? Could it be implantation cramping? I know I don't have cysts or fibroids or anything like that so I have ruled that out.