Cramping since 6 dpo anyone know why or what this could mean?

I am currently 7 dpo and ever since yesterday when I woke up in the morning I have been having random cramps. Some have been really light on my sides of my pelvis and then there have been some sharp ones on my ribs and some cramping almost like AF. Also been having on and off headaches as well as a bit of hot flashes and dizziness. I am not due for af until the 22 or 23 I’m not sure which. Anybody know what is happening because I think it is too early to be implantation