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Conception

When's the best time to get pregnant? Use our interactive ovulation calculator to work out when you're most fertile and most likely to conceive.

Original poster

BBT and ovulation tests don’t match up?!

9 replies

Confusedandtired90 · 15/07/2024 21:45

hellooo

TTC after x2 miscarriages and have been tracking with OPKs and BBT (I use an Apple Watch sensor for it).

I had a positive OPK on day 18 of my cycle but a temperature drop on day 21. They never seem to match up the way I expect apart from my first miscarriage! On my last one it was up and down.

does this mean I’m out? Or does BBT not really work for some people?

thanks so much for your help everyone!

BBT and ovulation tests don’t match up?!
OP posts:
T0r11210 · 15/07/2024 21:58

I don’t think the watch sensors are the best at recording temps, have you tried with an actual thermometer to see if the results are the same? I would trust the opks more

Lovedatforme · 15/07/2024 21:59

Confusedandtired90 · 15/07/2024 21:45

hellooo

TTC after x2 miscarriages and have been tracking with OPKs and BBT (I use an Apple Watch sensor for it).

I had a positive OPK on day 18 of my cycle but a temperature drop on day 21. They never seem to match up the way I expect apart from my first miscarriage! On my last one it was up and down.

does this mean I’m out? Or does BBT not really work for some people?

thanks so much for your help everyone!

How do you put in your RHR?

sirensong · 15/07/2024 22:06

Go by the LH tests. Your BBT generally looks too low tbh, so may be wrong. Barely above 35 some days. I say that as someone with low BBT myself but it doesn't go that low.

Original poster
Confusedandtired90 · 15/07/2024 22:59

I just synched my apple watch with fertility friend I think?! Or maybe with the Apple health app? Give it a google cos there’s definitely a way of doing it 🤗

OP posts:
Original poster
Confusedandtired90 · 15/07/2024 23:00

sirensong · 15/07/2024 22:06

Go by the LH tests. Your BBT generally looks too low tbh, so may be wrong. Barely above 35 some days. I say that as someone with low BBT myself but it doesn't go that low.

oooh thats interesting! Maybe I’ll get a digital themometer. Im just so bloody forgetful!

anyone youd recommend?

OP posts:
Plumchumm · 22/07/2024 01:11

Confusedandtired90 · 15/07/2024 21:45

hellooo

TTC after x2 miscarriages and have been tracking with OPKs and BBT (I use an Apple Watch sensor for it).

I had a positive OPK on day 18 of my cycle but a temperature drop on day 21. They never seem to match up the way I expect apart from my first miscarriage! On my last one it was up and down.

does this mean I’m out? Or does BBT not really work for some people?

thanks so much for your help everyone!

Hiya how did this go? Same is happening to me. Positive LH then random BBT drop at 3dpo. I’ve read up that it could be a secondary estrogen surge

Original poster
Confusedandtired90 · 22/07/2024 11:53

Plumchumm · 22/07/2024 01:11

Hiya how did this go? Same is happening to me. Positive LH then random BBT drop at 3dpo. I’ve read up that it could be a secondary estrogen surge

Show quote history

I have no idea yet! My BBT is all over the shop this month. I felt like I had the same implantation pains as I have done in previous pregancies (all MCs sadly) and have some spotting today along with a fairly big drop in BBT over the course of about 3 days.

Only time will tell if it's the start of my period or not. Sadly feels that way but I'll let you know!

OP posts:
Plumchumm · 22/07/2024 14:27

@Confusedandtired90 aww sorry to hear it’s been so confusing. Good luck! I hope it goes well

Tor88 · 10/11/2024 16:52

Following with interest, same thing happened to me repeatedly when ttc I found it immensely frustrating. Natural cycles consistently put my ovulation about 6 days after I'd get my static smiley and ewcm. This was after 2 miscarriages so I still wonder if that was why, then the first cycle the two things aligned again we conceived my son. I'm starting to ttc number 2 so starting to think about all this again and have the same question - opks or bbt?

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