Is implantation dip a myth?

[sarahkristin]

I'm sure this has been covered before but I haven't seen it in recent threads so I figured I would throw this out there. I'm wondering if anyone has had an "implantation dip" and it came out to be a pregnancy cycle or a non-pregnancy cycle. The reason I ask is because I've been ttc for months now, and this is the first time I've seen a dip this significant. It was 5 dpo. Too early to be implantation dip? Here's a link to my chart. What do you think? Crossing my fingers but trying not to put too much weight in it!

[karmab]

i always thought it was a myth, but i have learned since that the blastocyst, as it's implanting (a process that takes about 4 days) releases estrogen along with other chemicals, most commonly estrogen is at 7.5 days, just before it starts producing hcg. the estrogen can affect your temp. no guarantee that's what a lower temp on any given day really is, but there is some science behind the idea of the implantation dip.

[MaerynPearl]

I got a dip when my baby implanted...

but I also got dips months when I had no chance whatsoever of being pregnant...

I wouldn't rule it out, but wouldn't rely on it either.

[forthekids123]

You can have a implant dip or spike, so says FF. I always have a dip around 7dpo, and no bfp yet.

I think 5dpo is a bit early, but your O date may be off, then Implant would be right on time.

[Sihaya]

In all 3 cycles that I got pg, I had "implantation" dips at (4, 6, and 8 dpo, respectively). At first I was convinced dips like that only occurred when I was pg. But since last fall, I have regularly had temp dips from 3-8 dpo, (with 4 dpo being most common) in cycles where I was not pg (and not even trying for some of them, so it's not like it was a failed implantation).

Your chart looks promising to me, but I wouldn't put too much stock in that dip right now.

[Nutter]

I quite often have a big dip somewhere between day 4 & day 7, but have never had a BFP (& haven't been trying)

[Tara2]

I woulda said myth, but FF thinks otherwise... still. But then I just found my old chart from when DS was conceived, and sure enough, a nice dip at 8dpo, then it goes tri at 9dpo which is pretty cool. Oh and even had an 'ovulation dip' just before the rise. Pretty perfect chart for me.

This year though, I have had several cycles with dips, and a couple tri charts, and BFN.

so yeah it could go either way. I think the timing of the dip may be relevant.

[karmab]

what tara says is probably the key. the 7 or 8 day dip, followed by the day 9 or so rise to the next level. williams obstetrics- the authority in ob- says that implantation is a dynamic process led by the blastocyst- that the blast makes estrogen causing a mid-luteal estrogen surge (that you may or may not catch on your chart, depending on the timing) most commonly at 7.5 days that causes a brief proliferation of the endometrium, followed by the production of hcg, which rescues the corpus luteum just as it's about to start to wind down, and instead causes increased progesterone production and increased temp. of course you can have a dip if your dh stole the covers from you that night too, there's no telling for sure.

[sarahkristin]

Well in this case it wasn't a myth! I got my bfp at 10 dpo.

[jenniferadurham]

Originally Posted by sarahkristin

Well in this case it wasn't a myth! I got my bfp at 10 dpo.

Woohoo! Congrats! I will be 10dpo tomorrow...I hope I get as lucky as you!

[kalamos23]

Honestly, a dip at 5dpo is more than likely a secondary estrogen surge - it commonly happens around 4-6dpo. That being said, I did have a secondary estrogen surge dip at 4 or 5dpo (can't recall exactly) and then another dip at 8dpo with DD, with a nice BFP at 10dpo - so it's not unheard of either.

[karmab]

the estrogen surge that happens at around 7 days comes from the blastocyst! the craziest thing. so tiny and already working so hard. a 7.5 day estrogen surge for proliferation of the endometrium, by the blastocyst, then hcg production starts. how cool is that.

[peaches' mom]

Congrats sarah!!!!!! and FX jennifer!!

As usual I am awed by how knowledgeable you mdcers are

One further question. How big of a drop in temp is needed to constitute an implant dip? I am cautiously optimistic (and VERY excited) by my 7 dpo drop, but it was only .16 degrees Celsius. Then up again by about .13 at 8 dp. Wish i could post a link to my chart for any stalkers out there, but am not adept on my cell.

[MaerynPearl]

Originally Posted by peaches' mom

Congrats sarah!!!!!! and FX jennifer!!

As usual I am awed by how knowledgeable you mdcers are

One further question. How big of a drop in temp is needed to constitute an implant dip? I am cautiously optimistic (and VERY excited) by my 7 dpo drop, but it was only .16 degrees Celsius. Then up again by about .13 at 8 dp. Wish i could post a link to my chart for any stalkers out there, but am not adept on my cell.

Unfortunately it is only something you can look at in hindsight.

My likely implantation dip was only a little (.25 degrees Fahrenheit) but the next day it jumped SO HIGH (over .7 degree jump) that I would have almost thought I ovulated that day, though it would have been impossible to get pregnant if I had... plus then I would have had my first BFP at 6dpo (which isnt impossible, Ive had one that early before, but highly unlikely) and my first tri ultrasound confirmed my dates were right...

I actually ended up thinking I was sick because of the jump...

but in any case, Ive seen charts that look so very pregnant, with a dip and going triphasic... but the woman was not pregnant. (and in one case, had no chance at all of even being pregnant)

So its all hindsight. You cant say anything for sure until you get your BFP.

[peaches' mom]

Damn not what I wanted to hear But thanks for setting me straight Maeryn