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Need help understanding Ovulation & LP

vgarappolovgarappolo
in Infertility
Okay, So I just started using OPK's this month. I am up to CD 15 with no positive results (well, tested up to CD 14, will be testing CD 15 tonight). I am starting to get concerned with the timing of ovulation. I did some research, and from what I have read, having a LP shorter than 10 or 11 days is definitely not a good thing. I have a regular 28 day cycle, so if I am ovulating later than CD 18, do I have a cause for concern? One site I read said this will hinder getting pregnant, but clearly I can do that*. But others said this affects implantation which I am guessing would then cause a MC...is that right?

*Note:I have been pregnant twice before, one resulted in an 8 wk MC and the other was a chemical pregnancy.

So basically...does having a short LP mean MC are easier to come by? Or just make it harder to actually get pregnant?
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Re: Need help understanding Ovulation & LP

  • Dragonfly1226Dragonfly1226 member
    During unmedicated cycles, I get a positive OPK on CD 16. I have a 27 day cycle. the doctor was never really worried about it. I read all of the same stuff that you did too. The RE didn't put me on progesterone until after my first IUI cycle when I started spotting at 10 dpiui. I would recommend that you start charting a few cycles. That will give you a little more information about what's going on. Good luck.
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  • LnR70707LnR70707 member
    I don't know about it causing a m/c (maybe a cp), but there are things you can do the lengthen the LP, like taking B6.  There is also the possibility that you are just Oing late this cycle and the whole thing with be longer. 


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  • lovemymonkeylovemymonkey

    a short LP doesn't give the embryo enough time to implant, so usually you don't have implantation at all. Not sure if c/ps are related to short LPs though.

    If this is your first month using OPKs, I wouldn't be concerned just yet that you have a short LP. You may find that your cycle is longer this month b/c you are Oing late.

    After 5 years of TTC, 3 IUIs, 5 IVFs, 2 FETs, multiple losses and an adoption that wasn
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  • katieranck2202katieranck2202
    The length of your lp doesn't change, so if you ovulate 3 days later, that just means your cycle is 3 days longer (or whatever). If you know about when you ovulate from the opks, then you know not to expect your menses to start until the length of your lp. That is where many cycles of charting comes in, it tells you this kind of information.
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  • orthomomorthomom member

    I have a short LP and have had one c/p and one m/c.  Per all of the info that I have received from my own literature searches in medical journals ( I am a doctor,but not OBGYN) and from my OBGYN and RE short LP is very controversial.  No one is certain that it is a hindrance to pregnancy because some woman have had children with short LP.  However, there is some data to support that it affects implantation...that can cause inability to get pregnant, a chemical pregnancy due to poor implantatioin and early first trimester m/c (mine was 7w3d) due to inadequate implantation.  Frankly I am of the opinion that the crappy placenta I had with my DD and thus my preterm birth of her and pregnancy-induced hypertension was a result of my short LP. My RE and OBGYN say "it's possible". My LP has gotten shorter over the years too. (11 days with my DD and now is 9 if I am not taking IF drugs or progesterone). 

    In summary, it is anyone's guess whether short LP is a problem or not.  Most RE will put you on progesterone if you are unsuccessful without it after a few cycles.

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