Post # 1
Sounds like a dumb question, but hear me out:
I got my blood test results back yesterday, so I’m definitely, for real, for SURE pregnant. Whew. Then she asked when my last period was. It started on 6/29. So then she says, “Well, looks like you’re just over 5 weeks pregnant, due around 4/5/13”
BUT- I know I didn’t ovulate until CD 18, or July 16th. That was less than 3 weeks ago. (I chart my temps)
Sooo… how can I be 5 weeks pregnant if the sperm didn’t meet the egg until 3 weeks ago? So confused…
I get that they date by my last period, and that’s fine. So, if the typical gestation is 40 weeks, is that from my last period or from conception? Or is gestation really only 38 weeks, because the first two weeks of 40 are actually the follicular phase of the cycle?
If anyone can explain this, that would be lovely, and thank you in advance.
Post # 3
You simply add two weeks to how many weeks pregnant you truly are. So if you are two weeks pregnant since ovulation, you are really 4 weeks. This is because they go by the first day of your last period, not ovulation. Gestation is 40 weeks, so if you are 5 weeks, then you have 35 left to go! Does that make any sense?
Congrats on your pregnancy!!! Hope you have a healthy and happy pregnancy!
Post # 4
@DaneLady: Before you have an ultrasound, they usually go by your LMP. After a dating ultrasound is done, that gives you a more accurate EDD. Have they scheduled an ultrasound yet?
Post # 5
@Jenn23: You beat me to it!
OP – even though they do “dating” kind of funny, you’d be 5 weeks along and due about 35 weeks from now.
Anyone know why they date pregnancies that way? It has always seemed so odd that they include two weeks of “pregnancy” before you’ve ever even ovulated!
Post # 6
@Jenn23: Thank you, that makes sense 🙂
@MARIE901: They have not set that up yet, as I’m still so early. They said probably the end of August/beginning of September would be ideal.
Thanks ladies 🙂 I’m trying not to stress about it, but we’re telling our parents and they’ll ask how far along I am and it feels almost dishonest to say 5 weeks because I know the actual embryo is not 5 weeks old yet. I do understand being 5 weeks into the pregnancy though, it just didn’t make sense at first. Thanks again!
Post # 7
5 weeks pregnant, and the baby is 3 weeks. It goes by the life of the egg.
Post # 8
No idea, but I had to pop in to do a little happy dance!!! Congrats! 😀
Post # 9
They will give you your actual due date after the first ultrasound and it might be different from 4/5/13, depending on the gestational age of your baby. I’d just tell family “some time in early April” if they ask.
And, congrats, of course! 🙂
Post # 10
@roxy821: Aha! Thanks 🙂
@MissBoPeep: Thank you dear! I heard you got engaged?!?! CONGRATS!!!
@AprilJo2011: We only said “Spring 2013” and nothing more specific. We’re only telling immediate family & my BFF until we get the ultrasound and make sure everything is ok and we have a better EDD. Thanks so much!
Post # 11
- Wedding: November 2013 - St. Augustine Beach, FL
Your EDD will most likely change a few times over the course of the pregnancy. The fist calculation is always based on the first day of your last period (that is considered the first day of your cycle.) A gestational period (i.e. a pregnancy) is based on the length of that entire cycle, not the age of the baby since actual conception. You EDD will probably change each time you have an ultrasound and they do measurements to see how quickly the baby is developing. Congrats!
P.S. Using this method a pregnancy is actually closer to 10 months rather than the 9 months we actually count.
Post # 12
@Mrs.KMM: i’ve read that they measure it that way because most people know when their last period was, but not when they ovulated.
Post # 13
@BirdofaFeather: Agree. Before people knew enough about ovulation, they justbased the Tim g off the first day if the last period because that was knowable!