conception date

[eleb82]

hello,
i need some help estabilishing a more accurate conception date.
i had sex with a man around the end of march, like march 25 or 26 , he did not come inside of me, we ended up finishing with oral sex, thats how he came.
then my period came a little late, like 5 days late, and also found out through a ultrasound i had an ovarian cyst. (that went away with my period though.)
just to be sure, i took pregnancy tests and they were all negative then.
so my period came around april 3rd, and lasted like 4 days, like it has always been though.
then around april 9 i had oral sex, no penetration at all.
from april 13th on i started having unprotected sex with my boyfriend .
on may 17th i found out i was pregnant, and the same day i had an ultrasound that was stating i was 6 weeks and 3 days pregnant and the due date was january 7th ,2013.
the other ultrasounds i had were stating that my due date was on january 10th, ( morphologic ultrasound i had at 20 weeks, and a 3d one that i had at 25 weeks)
i need to know when i have conceived. my doctor says sometimes around april 16th.
i need to know if there is a chance that i got pregnant , maybe with pre ejaculation sperm, at the end of march,and maybe what i thought it was my period, was only implantation blood?
if so, though, all the ultrasounds i had should have stated that i was 2 weeks ahead, right? please answer me, im very anxious!

[Combs7]

It's usually 14 days from your last period. SO if your last period was April 3rd your day of onception would be April 17.

[Combs7]

And the most acurate ultrasound is the one you had earliest for determining dates.

[ashkevin13]

Personally i think ur doctor is right however u can have it go plus or minus five days.. But never almost half a month to a month. I am pretty sure u got pregnant in the middle of april. Congrats.

[NicoleW09]

First trimester ultrasounds are generally spot on in dating a pregnancy. I got pregnant march 28th with my daughter and my due date was december 21st. This pregnancy i conceived april 26th-ish and my due date is January 17th. Plus implantation bleeding isn't actually flow, its just spotting. You conceived in April.

[eleb82]

thank you, i m very concerned..;-( i hope its just my guiltiness killing me, but im very very anxious

[eleb82]

well, that looked like a regular period, so i guess it was, plus i think that specially on my first ultrasound they would have noticed if i was 2 weeks ahead , right?

[GoBrandiRanger]

If you were 5 days late and tested and it was negative, I'd say you're very lucky and didn't conceive with anyone but your boyfriend. Congrats! :)

[nichole75315]

I read all of this. If the first ultrasound is most accurate and that was May 17 stating 6w 3d I would say that's closer to the March dates? Idk. The numbers are too close in my opinion. My doctor uses my first due date even when I measure ahead now... I'm not a conception genius but I'd be open when thinking. Ask your doctor if you can speak with the head nurse in thier staff...?

[nichole75315]

Also... Seeing that you had sex one week prior to your period I do believe its possible to have a regular period. Your body had most likely already started that process. Don't we release estrogen prior to the release? Really wish Id paid attention in health...

[eleb82]

the ultrasound tech would have seen if i was 2 weeks ahead , right?  6 weeks and 3 days , means 4 weeks and 3 days from conception, cause they add 2 weeks from menstrual period, right?

[eleb82]

i was 5 days late, but then my period came

[stefani2013]

We posted at the same time, but yes eleb82

[eleb82]

thanks, actually Nichole scared me a little..;-(

[stefani2013]

Haha I figured I thought I would help clear that up a bit. :)

[eleb82]

well, anytime starting from april 13th im safe, cause i know its my boyfriend's baby !    the ultrasound tech looks at the baby measurements and see if they matches with my last menstrual period?

[eleb82]

i just needed to know for sure the conception wasnt at the end of march, cause reading stuff online you learn about implantation bleeding, and i started thinking maybe it couldve happened to me. my periods are never regular though, and i guess since i had the ovarian cyst and i was very stressed out then, thats what caused my period to be late.
the march guy also says that he is been told by a doctor that he cannot have kids, cause his sperm is not strong enough, but still..i need to be sure.

[stefani2013]

Early ultrasounds are most accurate

[nichole75315]

So this morning I asked my obgyn to read this as it really had me boggled. I hadn't had a period as I missed my depo. He insisted that much of what is said is correct but both methods of guessing conception date would supply two different answers. You would subtract 2w from the 6w3d if your period had arrived as normal. I know its silly but it made me wonder with my own situation. He said to clear your conscience or relieve any stress or debate he'd suggest marking the dates you know on a calender and discussing it. He said even stress around conception can cause a late period. I've had implantation bleeding and from what how he explained it he believes March for you as well but your own doctor can remove any doubt you have. I just wanted to say thank you for this post. Many women are too selfish to consider finding the truth and I think that's honorable. My due date had changed from March 7 to Feb 24 so I was somewhat in a similar spot. My doctor also said he might consider joining this forum lol!

[nichole75315]

I hope that sounds right. Four kids I have the worst memory.

[eleb82]

thank you, but i guess that would make me 2 weeks ahead, and they never said that in my ultrasounds, my doct keeps saying date of conception is  the middle of april. that blood i had for 4 days wasnt spotting, but real blood...unless you can spot looks like heavy menstrual flow. my last two ultrasounds stated i was even 3 days behind. i mean somehow , somebody would have told me if i was measuring 2 weeks more, since the beginning , no?

[AnnieBrooke]

Eleb, please stop worrying.  Ultrasounds use the medical method of counting.  That method begins the pregnancy's "day 1" with the first day of your last period.  NOT with some guessed-at date of conception.  (Obviously, the first day of your last period, you are bleeding, you are not yet pregnant.  But for generations it has been used to start the count, because it is a big, obvious signal.)  When the ultrasonographer said 6w3d, she was not saying that is when you conceived, but when your last period began.  Then you would have ovulated a couple of weeks after that, and then you would have conceived, as most of the others (and your doctor) have said.  Try not to mix yourself up.  Trust your doctor, don't think the start date of your pregnancy in your medical charts is anything but the start date of your last period.

Regarding "implantation bleeding," it hardly ever happens, and when it does, it is a little bit of rusty or brown blood for possibly a day.  A blastocyst is smaller at that point than the dot over an i in this post, it burrowing into your uterine lining is not going to cause gushers of blood that last several days and look like a period.

Sorry about the guilty conscience, but don't confuse it for medical reality -- your doctor is right about the date of conception.

Good luck, cherish your wonderful new baby!

[eleb82]

thank you very much Annie, can you believe that i cannot sleep at night with this heavy guiltiness im carrying? thanks a lot!

[AnnieBrooke]

Regarding the guilt, well sweetheart, bury it with a shovel and bury the shovel.  You're going to have a baby with the boyfriend you love, you are never going to be unfaithful to him from now until forever.  That is how you atone.  Never dump your guilt load on him in the name of being "honest" (unless the relationship is over anyway and even then, it's not a good idea.)  The temptation to blurt out everything to the one person it would hurt the most is basically prompted by the desire not to have to carry the load alone, it makes the problem someone else's problem but that other person doesn't deserve the hurt.  Be strong woman and do what you can to make the self-dismay go away (possibly talk to a counselor).  But don't confuse it with some kind of supposed inner knowing that there is a risk the baby is not your boyfriend's.  The baby is your boyfriend's!  Take some joy there.  A lot of women in your position don't have this happy answer.  Be a good mommy and be a good wife (or girlfriend) and that is how you make this all right.

(((HUGS)))

Annie