Confused on the math of conception. Can someone help?
So we ovulate and have sex within days of each other. We try to have sex before we ovulate. I get that. But can't it take 6-14 days for implantation? Do pregnancy tests show positive before implantation? Or does it have to implant before a positive test to show?
So say its a normal 28 day cycle ovulating on day 14. So the person gets pregnant on that day and misses the first day of the next period. Tests on day 29 and it shows positive. Does that mean that the fertilized egg just implanted within days? Or did the egg ipmant earlier? So how long is that person pregnant for?
They say that at the first positive pregnancy test that your 1 month pregnant. But in actuality you weren't pregnant for even half that for sure. So how long is that person pregnant for?
Clearly this is personal I wrote a post with my dates and testing etc and waiting to hear what you think. I'm 1 day late but with a positive test and in severe denial. I'm going to wait another week to see if my period is just late.
ovulation happens on cd14 (in your example) the egg has to be fertilized within 12-24 hours otherwise the egg dies. If it is fetilized it takes anywhere from 5-12 days for the egg to travel and implant. Once it implants it takes generally about 3 days for your body to produce hcg into your urine.
So if you test positive on cd29 your egg could have implanted anywhere from cd 6-12. It is hard to say for sure when you ovulated unless you temp and take opks, but you do know for sure when you started your last period because you bleed. So drs go off of your LMP to give you an estimated due date. So you are pregnant two weeks before conceiving.
A pregnancy test cannot show positive before implantation as said above.
Generally speaking a test taken 12-14 days after you ovulated should give an accurate result however some women do get later positives.
By my numbers I would have implanted between 9 days ago and 3 days ago. My positive is extremely clear (did another today to be sure). Seems early to me to test so positive. Then again based on my calendar I am technically 1 day late so well within testing rules.
1 day late is typically about 7-8 days after implantation, which is perfect timing for a nice dark line. And you are right about us not being 'pregnant' for half of that, doctors just go by our LMP to make things easier.
Agree with above posters... Doctors calculate due date based off of the first day of your last period because most people don't know exactly when they ovulated. With my son, my due date was originally Aug. 29 but when I had my early scan it got changed to Oct. 27th lol... and then he was born Nov. 6. So according to scans I was 12 dpo when I got my bfps and they were very dark. Congrats!!!
I don't know when I ovulated but I know the two days we had sex. So that's got to mean something right? We had sex on ovulation day according to my ap then again two days later and that was it for the month (ok again a few days ago. It that doesn't count). Is it safe to say that between those first two times was when it happened?
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