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Positive OPK but BFN HPT

emilyalsoemilyalso member
in 1st Trimester
I've read some older threads about this, but I thought I would put the question to a current audience. I am 15 dpo, and keep getting BFNs on HPTs. I was out of tests (I'm sort of a nut when it comes to taking them) but I had an OPK. I mostly did it for fun, but it had a very obvious second line. I've heard both sides... it could be that it detects pregnancy and NO, never use it to detect pregnancy. Anyone have personal experience with this? 
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Re: Positive OPK but BFN HPT

  • penelope4612penelope4612 member
    Are you sure you are 15 dpo and not ovulating late?
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  • emilyalsoemilyalso member
    I'm pretty sure. My cycle is fairly regular, and I got a positive OPK earlier in the month when I would expect to be ovulating. 

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  • kcolly32kcolly32 member
    The thing with OPK is it can give u more than one positive in a cycle. I would always get more than one positive because it detects a rise in LH which is what increases before ovulation but that doesn't mean you actually ovulated at that time. You can have multiple LH surges in a cycle. So you might not have ovulated last time, maybe your body was gearing up to but never actually did. That would also explain why you think your 15 dpo but no AF or positive HPT. You're cycle is regular til it's not.
    Expecting baby #1 August 2016 
    Already have three furbabies- Blake, Sydney, and Chester 


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  • joyful08joyful08 member
    kcolly32 said:
    The thing with OPK is it can give u more than one positive in a cycle. I would always get more than one positive because it detects a rise in LH which is what increases before ovulation but that doesn't mean you actually ovulated at that time. You can have multiple LH surges in a cycle. So you might not have ovulated last time, maybe your body was gearing up to but never actually did. That would also explain why you think your 15 dpo but no AF or positive HPT. You're cycle is regular til it's not.
    Beautifully said
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  • MamaCoffinMamaCoffin member
    I think it's also important to point out that opk's ALWAYS have two lines. You produce LH during your entire cycle and an opk detects this hormone. It's the SURGE that happens before ovulation that gives you a positive OPK. Was the second line as dark or darker than the control? If not then this was not a positive OPK. 

    Mama to two perfect little girls.
    Lucy 07-13-11
    Violet 03-13-14
    Conceived #3 since September 2015
    11-25-15 twelve week loss
    07-21-16 ten week loss
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  • SSCmommaSSCmomma member
    Wss^
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