When did your OPKs start getting darker after O?

melewen · Jul 15th, 2017, 13:00 PM

For those of you who saw OPKs getting darker after ovulation and got a BFP, when did they start getting darker?

I've been taking opks since I got a positive because I actually O'd early which like NEVER happens for me. I wanted to make sure I didn't miss it - but it's been confirmed with temps now. After I ov'd they were pretty light but now it's getting quite dark. I'm only 6dpo though! I do remember with my first I got a fern on my microscope on like 2dpo. It was so weird and one of my unusual symptoms that led to a BFP

Cppeace · Jul 15th, 2017, 13:06 PM

Opks typically won't go positive until after a hpt will. Sometimes opks never go positive when pregnant.
As for when they would darken I'd say if it happens for you it will start darkening 9-11dpo a day or two after implantation is likely.
The reason opks can go positive with hcg is because it is a very similar chemical to LH and it overwhelms the opk into reading wrong.

melewen · Jul 15th, 2017, 13:22 PM

I've heard otherwise, so I'm curious for actual experience

maryanne1987 · Jul 15th, 2017, 13:36 PM

Mine always darken when AF is approaching. The month I got my bfp they darkened as usual but they didn't turn postive until a few days after my bfp. I'd got a positive digi before my opk's had turned positive. Hope you get your bfp this month

melewen · Jul 15th, 2017, 14:20 PM

That's very weird! Mine are always super light after. At least it's something to do this month

Cppeace · Jul 15th, 2017, 14:27 PM

It's common for opks to go darker just before AF because that is when estrogen begin to rise and can sometimes cause a small LH surge.

As for "actual experience" I've had a miscarriage and chemical pregnancy and the only time my opks got in any way what I'd call dark in the tww was the same day as a bfp.

Everyone's experience can be different, though. But OPKs getting very dark or going positive before a hpt is going to be uncommon at best and most likely very rare and triggered by an estrogen surge from implantation and not the HCG.

That is logical.

melewen · Jul 15th, 2017, 20:38 PM

I'm nowhere near AF but thank you for your help.

Jul 15th, 2017, 13:00 PM	1
melewen Pregnant (Expecting) Chat Happy BnB Member Join Date: Aug 2014 Posts: 2,236	When did your OPKs start getting darker after O? For those of you who saw OPKs getting darker after ovulation and got a BFP, when did they start getting darker? I've been taking opks since I got a positive because I actually O'd early which like NEVER happens for me. I wanted to make sure I didn't miss it - but it's been confirmed with temps now. After I ov'd they were pretty light but now it's getting quite dark. I'm only 6dpo though! I do remember with my first I got a fern on my microscope on like 2dpo. It was so weird and one of my unusual symptoms that led to a BFP

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Jul 15th, 2017, 13:06 PM	2
Cppeace Trying to conceive (TTC) BnB Addict Join Date: Feb 2016 Location: Missouri Posts: 5,549	Opks typically won't go positive until after a hpt will. Sometimes opks never go positive when pregnant. As for when they would darken I'd say if it happens for you it will start darkening 9-11dpo a day or two after implantation is likely. The reason opks can go positive with hcg is because it is a very similar chemical to LH and it overwhelms the opk into reading wrong.

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Jul 15th, 2017, 13:22 PM	3
melewen Pregnant (Expecting) Chat Happy BnB Member Join Date: Aug 2014 Posts: 2,236	I've heard otherwise, so I'm curious for actual experience

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Jul 15th, 2017, 13:36 PM	4
maryanne1987 Pregnant (Expecting) BnB Addict Join Date: Aug 2012 Posts: 5,795	Mine always darken when AF is approaching. The month I got my bfp they darkened as usual but they didn't turn postive until a few days after my bfp. I'd got a positive digi before my opk's had turned positive. Hope you get your bfp this month

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Jul 15th, 2017, 14:20 PM	5
melewen Pregnant (Expecting) Chat Happy BnB Member Join Date: Aug 2014 Posts: 2,236	That's very weird! Mine are always super light after. At least it's something to do this month

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Jul 15th, 2017, 14:27 PM	6
Cppeace Trying to conceive (TTC) BnB Addict Join Date: Feb 2016 Location: Missouri Posts: 5,549	It's common for opks to go darker just before AF because that is when estrogen begin to rise and can sometimes cause a small LH surge. As for "actual experience" I've had a miscarriage and chemical pregnancy and the only time my opks got in any way what I'd call dark in the tww was the same day as a bfp. Everyone's experience can be different, though. But OPKs getting very dark or going positive before a hpt is going to be uncommon at best and most likely very rare and triggered by an estrogen surge from implantation and not the HCG. That is logical.

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Jul 15th, 2017, 20:38 PM	7
melewen Pregnant (Expecting) Chat Happy BnB Member Join Date: Aug 2014 Posts: 2,236	I'm nowhere near AF but thank you for your help.

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