Implantation?

Could this be an implantation dip?? 7-8 dpo I had twinges. 9 dpo felt like af cramps. 10-11 dpo feels like twinges. My breasts are a little sore and my cervix has moved up and became a little softer. Today I felt shaky, had hot flashes headaches and nausea. My period ranges from 29-31 days I am on cd 28 today.

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