Help! Calculate my dates?

Dunny15

I went for scan today thinking 7w6d but was told baby measures 6w5d. Would this be 6w5d from gestation which technically would mean I'm 8w5d pregnant due to adding on the two weeks which u r already classed as when u conceive?? mind is working overtime!

mrsf123

No. It doesn't work like that.  It makes you're 6 weeks and 5 days pregnant.  hatever size the baby is measuring is the amount you're pregnant.  You probably ovulated later than you realized.  But if you're confused, call your doctor.

MommyAmes2

If they told you that you are measuring 6w5d, then you are measuring just that, not 8w5d. I went in thinking I was 8w and measured 7w2d. So they moved my due date and I was 7w2d pregnant.

ETA: Typo

Laurakat81

They already added the two weeks when they told you that the baby measured 6w5d. So you're 6w 5d pregnant. If you were going off your LMP its not a very accurate way to determine how far along you are as most women do not ovulate on cycle day 14.

Lorlain

my doc used my LMP, ovulation date (since I knew it) and what I was measuring to give me a due date. Basically she took all 3 and chose the middle one (which was what I was measuring at). My doc also told me that ultrasounds can be off by as much as 5 days on either side

plunderb

JNL$LSM:

I am confused now to when I went to the doctor, I was 6 weeks 0 days, she gave me a due date based on my LMP. I go back on Friday for another ultarsound, with just the tech, not my doc. Do you think they will change my due date? That would push my due date to August 29, which is still good because I will be around you lovely ladies still.

The LMP is a guess. It's usually good enough, so if there's no reason to have an early ultrasound, most OBs just roll with that. If you do have an early ultrasound, that will give more accurate information, as it is based on the baby's actual development and not a guess about when you probably ovulated (implantation time can vary, too). Your due date could change, but the whole due date thing is pretty fuzzy anyway. You're really "due" any time 3 weeks before your due date until 2 weeks after.

Really, if you get a later due date, that could be a good thing. You wouldn't want to be pressured into an early induction if your LMP due date was inaccurate.

raffsen

plunderb:

JNL$LSM:

I am confused now to when I went to the doctor, I was 6 weeks 0 days, she gave me a due date based on my LMP. I go back on Friday for another ultarsound, with just the tech, not my doc. Do you think they will change my due date? That would push my due date to August 29, which is still good because I will be around you lovely ladies still.

The LMP is a guess. It's usually good enough, so if there's no reason to have an early ultrasound, most OBs just roll with that. If you do have an early ultrasound, that will give more accurate information, as it is based on the baby's actual development and not a guess about when you probably ovulated (implantation time can vary, too). Your due date could change, but the whole due date thing is pretty fuzzy anyway. You're really "due" any time 3 weeks before your due date until 2 weeks after.

Really, if you get a later due date, that could be a good thing. You wouldn't want to be pressured into an early induction if your LMP due date was inaccurate.

I never thought of it that way.  I also was sure about my LMP, but because of measurements during an early us they pushed my dd back 5 days.  This didn't bother me, for I understand all dd are in the middle of your expected "delivery time frame."   Now looking at it after your comments, that makes sense- better they guess late than early!