7-8 dpo anyone else

I'm either 7 or 8 dpo this month I decided not to use opk but I usually get a positive opk on CD 13 which I baby dance that day but i had spotting with egg white.

Well I have no symptoms at all but I got a really sharp stabbing pain or cramp in my uterus that lasted for couple minutes but it's gone now.

I also got in a car accident this morning maybe this could be the cause of my cramping