Post # 1
hi bees! i am so confused about trying to figure out my due date and how far along i am. here’s the situation: i have long cycles; sometimes up to 55 days. my LMP was 8/12. i am pretty sure i O’d on 9/5 (CD25), but i didn’t use OPKs and i don’t chart. at this point my RE is using my LMP to calculate my due date, in which case it woud be 5/19. based on my O date, it would be 5/29. i have my first ultrasound 10/3 and i’m hoping it will clear up some confusion then.
what do you think? what did your REs/MDs use to predict how many weeks along you were and determine your due date? did they use LMP or were they flexible if you O’d late like me?
Post # 3
If you don’t have any proof of when you O’d then it is very common for your doctor to go by your LMP and then will readjust if needed after the first ultrasound. Most early ultrasounds are accurate predictors (within a few days) of your due date.
Post # 4
I will let you know what my U/S technician and doctor say, but I know exactly what day I ovulated/conceived and it’s five days after the LMP calculation. I plan on telling them that but sometimes medical professionals don’t listen, in which case they’ll probably tell me I’m measuring small and then I’ll have to force them to hear me.
Post # 5
@roxy821: thanks! that totally makes sense because i’m not sure. good to know the ultrasound will help with dating as well.
@daybyday: def. be firm with them since you’re sure! looking forward to hearing how your ultrasound goes 🙂
Post # 6
@mintmercury: I posted this on the 6 months up TTC success board, but I thought I’d post here. I had IUI, so they technically know the exact day I got pregnant. However, when I had my 2 ultrasounds at my RE’s office, they measured the baby and based my due date on that. My OB did the same thing at my ultrasound with her (the baby was measuring big). So, I’m assuming they’ll probably do the same with you. Also, my OB told me it’s basically a due month, not a due date anyway
Post # 7
@Candy_Nee: thanks! i’m so impatient but i’m sure my ultrasound will be able to help a little 🙂