i was just about to post the same question.....
Im CD 18, and last 2 cycles i have ovulated on CD 18 or 19. DP and i bd last night, then i went out with the girls for dinner, when i went to te toilet i had one streak of red blood only a little. i am thinking i O'ed either friday or yesterday as i had major cramping (really bad) so is the red streak an ok sign? i have never ever had it before, and thisis my 7th month TTC. luv TG