• robin-marty

    fertilization/ovulation is usually 2 weeks after LMP.  Implantation is at least 5 days after, since it has to travel down the fallopean tube and get to the uterus.  drs go by LMP for gestational dating not because they don’t know when fertilization takes place, since many women who want to track can tell based on temperature changes, but because there is no way of knowing exactly how long it takes to implant, since it can be anywhere from 5-10 days.

  • jodi-jacobson

    For some women temperature tracking works, for many others it does not.  I think that saying “many women know” is exaggerated; many women with very regular cycles may know, but others won’t necessarily be able to do so and variations occur frequently, which is why NFP can only be used effectively if you have safe abortion care as a back up.

  • robin-marty

    if you are tracking with the express purpose of temping, etc, most of those women know when they ovulate after the fact, just not before it happens, which is why NFP can work for getting pregnant but utterly sucks as a means of preventing.  Just ask Howie.

  • leftcoaster

    pretending that “pain” is a reason to halt the option. Hello? Can you imagine traveling down a birth canal? Or how about circumcision? Vaccinations?

    Another ridiculous ploy.

     

  • jodi-jacobson

    that’s the distinction i was trying to make, but you did more clearly.

  • cpcwatcher

    Yup yup yup.  “Fetal pain.”  Psh.  Like I said, there’s no evidence that there’s even pain at this point, but any excuse to limit access, right?

  • cpcwatcher

    Indeed, like I said, *partly* because many women don’t really know actual date of fertilization (let alone implantation!), but also because it’s more likely to reflect a person’s unique gestational cycle.

  • cpcwatcher

    But yes, Robin… you’re correct that LMP is usually 2 weeks prior to *fertilization* and not *implantation*.  Forgive my mistake. :)

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