I had sex the first day of ovulation (20th) and then again on my most fertile day (23rd) on the 26th I spotted very light an off shade of the toilet paper pink and then stopped next day I bled but not enough to need a panty liner followed with cramping which lasted only like 3 hours before stopping altogether and then again today more brown this time followed with cramping but stopped after a few hours. Today I am 12 days away from my period could I be pregnant? (Being that it's the 27th)  I'm not sure how this works