i'm waiting to find out (3 days late..i'm waiting the full week, less chance of false neg. if i am) but, 8 dpo i had mild period cramps, then 2 days later, i woke up feeling like i had done about 300 crunches in my sleep... then 2 days later (when my period was due) mild, 'warm' feeling pms cramps for about 6 hours..then nothing.. next few days, only milder twinges occasionally.
i hope this helps! it's not really an answer, since i don't know yet, but i'm in the same boat!
lots of baby dust to us all!!