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Lmp / Conception date same thing
Hello , Does LMP date and Conception date mean the same thing . I think it’s 2 seperate things but I just had to ask the dum question sorry .
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Ovulation comes (on the average) about 14 or 15 days after the first day of the woman's LMP. This will depend on how regular her menstrual months are. It goes like this: ovulation, then 14 days or so later [if she's not pregnant], a period, then at some new date, ovulation, then 14 days later, a period, and on and on. Ovulation is the start point in a menstrual month, and the period is the end point. It's cleaning house to get ready for a new ovulation. (Unless she's pregnant, then it doesn't come.)
The period comes regularly about two weeks after ovulation, but the next ovulation can come when it feels like it, and doesn't have to be two weeks after the LMP. This doesn't mean the LMP is an insignificant number when you are wondering when conception was. It isn't accurate to assume ovulation always comes exactly 14 days after the first day of the last period, but doctors count out the pregnancy time period starting with the LMP anyway. They use the first day of the last period to begin the count of pregnancy months, because it's a clear signal (unlike ovulation). They will check the assumption they are making (that ovulation came two weeks after the LMP) by looking at the size of the embryo when she gets an ultrasound.
It's not like any doctor would say a woman got pregnant on the first day of her period, they just calibrate the count from that point anyway. If you ask, your doctor will be the first to tell you that ovulation (and conception) came two weeks later than the LMP.