Natural FET timings

[Mctm123]

Im doing a natural FET. Transfer is 6 days post ovulation. I was testing negative 6am Friday morning but positive at 6pm…(I probably would have tested positive earlier only I was in work so didn’t test but had all the signs) I tested again Saturday morning at 8am positive but by 17:00 I was testing negative. The clinic want to transfer 6 days later and are saying PM Friday (they only do transfers in the afternoon). I am worried cos if it’s PM Friday I think we are going into 7 days post ovulation. I suggested Thursday being best but they can’t take an afternoon positive they only go off the morning surge. Anyone experienced similar? I’m worried it’s not gonna work

Why is it 6 days post ovulation? Or do you mean 6 days post surge on the test?
Ovulation is meant to be around 36 hours after the surge. So if they are doing that, then it isn't actually 6 days post ovulation and it would be fine.
If they were doing 7 days post genuine ovulation then yes, that would be too late i would feel.

I do feel the clinics are a bit bonkers with the natural FETs. I'm doing one and I don't hold out much hope. I don't feel that they are on the ball enough.

Sorry yes 6 days post surge

Assuming it's a 5 day embryo? But that sounds fine. Definitely not too late.

Yes 5 day embryo so day 7 is ok do you think?

Yes. They should put it in 5 days after ovulation. So that's the bit that matters. Whether they gauge your ovulation correctly is another matter. My clinic seem to prefer a finger in the air approach and I'm finding it stressful. They don't even test LH. (I am doing it myself however).

That does sound stressful! How can they be sure the timing is right?

I’ve actually spoke to the embryologist today and she has agreed to transfer on Thursday now as I originally wanted. I got the surge on Friday evening (although I definitely feel I would have got it sooner had I been at home and tested) so the 6 days later is Thursday from then. Hopefully I’ve got that right

I honestly don't know? Last month they tested progesterone in a hope they hadn't missed it (would have fallen at a weekend if they had anyway) and started me on progesterone anyway. The test came back I'd already got a higher progesterone level than they wanted so I'd already ovulated. But my argument was- had the test come back with no level, then OK they weren't doing it too late, but how would they know when I'd ovulated going forwards? That were just blindly going to do it and i thought surely doing it too early is just as bad?
Unless doing it with a trigger (which they did give me but last month it was too late to be going off that) and I think I'll ovulate before a trigger would work this month also, or testing LH then i really can't see how they do know. I am not confident at all.

I always surged in the evening, but my clinic took this as the following day surge - like yours, as it was past 6pm. I had the ERA test done this year due to 5 failed FETs and they realised they had been transferring too late. The evening I surge, needed to be counted as the day. 5 FETs were all transferred too late. Going into my 6th one now. Livid with the clinic, I only have 2 frozen remaining. Everyone is different though.

@AnonS wow. I would be really angry too. I think unless they can be sure of the timing they shouldn't do it.
I've now had mine. They used a trigger but I think i was surging already that afternoon before I did it. So I was wondering how accurate the timing really needed to be as you don't want it going wrong because of that. I won't know though for another week!

Not sure where you're based, but the ERA aren't standard tests. Had to pay a fortune to have it done, glad I have though. Also found out my uterus is T shaped instead of Y grrrr

How did the FETs go? In the process of it all myself!

@LolaBumble I had my 6th transfer on Tuesday. Desperately not trying to symptom watch! Where abouts are you at with yours?

Ooh good luck, keeping everything crossed for you! It’s so hard not to symptom watch. Are you planning to test before OTD at all?

I’ve just had a failed natural modified FET and just waiting for the next one. I really pushed for natural FET after an abandoned medicated FET last year, but really questioning whether that is the right choice for this next transfer! The timings stress me out!

I did a natural and it didn't work. I only had one frozen so we won't be doing any more. But if i was, I don't think I'd do natural next time.

@paintfairy very sorry to hear that!

Sounds like you had a stressful time with it, it’s a difficult enough process as it is

Sorry to hear it failed. What number transfer is this?

They think its ovulation that makes me bleed. When I'm not doing IVF prep, after ovulation I always bleed for at least a week before AF is due - sounds like falling naturally will never work for me.

I'm going to test 1 day early, purely as I'm going horse racing with friends. If it's a no, it will be a true no, so I can let my hair down. My clinic changed test days, it always used to be 10 days later, but now 12, so day 11 will be a true reading.

This will be by third, I can’t conceive naturally due to bilateral blocked tubes. I was very lucky and my first fresh transfer was successful and resulted in my daughter. Then I had a failed natural modified FET last month, so waiting for my next period to have another go! I have two embryos left. Think I’ll do another natural modified and then if that doesn’t work try a medicated round with the last embryo!

Sorry to hear that you don’t think you can conceive naturally, would make life so much easier!

That sounds like a good plan! My clinics OTD is 11 days post - I actually tested 10 days post and stopped progesterone a day early. Good timing you going out with you friends! So hope this transfer works for you!! X