Pregnancy Event Calculator

 

Have you tried adding, subtracting, multiplying, and counting on your fingers, and you're still not sure when your baby is due?

Use this handy tool to figure out the approximate date. (Remember, fewer than 5 percent of women give birth on their actual due date)  You can also use this calculator to determine the milestones during your pregnancy.

This calendar uses the number of weeks since your last menstrual period to describe how far along you are in your pregnancy.

Enter first day of your last menstrual period:

Enter length of your cycle (in days):

Weeks of Pregnancy
Estimated Date
Event
2 Weeks (0 dpo) Ovulation/Fertilization Date
4 Weeks (14 dpo) Home Pregnancy tests often positive
6-7 Weeks Fetus and fetal heart usually visible on transvaginal sonogram
9 Weeks Major fetal organs have all formed
11-13 Weeks U/S screen for Down syndrome (nuchal thickening) if indicated
13 Weeks 2 Days First Trimester ends
15-20 Weeks MSAFP testing suggested
18-20 Weeks Optimal time to do anatomical sonogram
20-22 Weeks Fetus should be moving by now (Quickening)
23-24 Weeks Fetal viability begins
26 Weeks 4 days Second Trimester ends
26-28 Weeks Glucose Challenge Test (GCT) for diabetes
If Rh-Negative receive RhoGam
28 Weeks Over 90% neonatal survival
32 Weeks Consider sonogram to check fetal growth
37 Weeks Term of pregnancy begins
GBS testing between 35-37 weeks
40 Weeks
(266 dpo) 		DUE DATE
41 Weeks Consider Fetal Evaluation
42 Weeks Postdate begins

 
   

 

Monadnock OBGYN Associates, P.A.
454 Old Street Road
Suite 302
Peterborough, NH 03458
668 Main St.
Suite B
Keene, NH 03431

Appointments 603.924.9444    Business Office 603.924.3088     Fax 603.924.8709

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