No, it does not mean that ovulation will be exactly 4 days beofre ....You can ovulate earlier or a little later . You have the right idea though ! Usually your luteal phase remains the same (varies by a couples of day at the most each month).

Oh by the way. The reason your got your period 4 days later is because you ovulated later....

Hey emma2 thanks for your response!!!

So you think that there may still be a chance that I ovulated around 14 days after the first day of my last period, even if my period was late. I hope so, I just hope I didn't ovualte later than I thought. I am having lots of stomach cramps, but the cm is not like it was a week ago when I suspected I was ovulating. I wonder if the cm will change if I did in fact become pregnant a week ago?????? Thank you so much for your advice.

-court1

If you have a 14 day luteal phase then yes. Your luteal phase doesnt change. It is fairly consistent. What varies the most is ovulation.