Two pregnancy test calculators and with different results?
Two pregnancy test calculator s and with different results? There are slightly different methods of calculating due dates. And ultrasounds go by measuring growth, and they are NOT so precise that they can nail down the exact date of conception, early pregnancy scans have a margin of error of up to a week. Our doctor will almost never change your due date based on the scan as long as it’s within that margin of error. They continue to use the date based on the LMP. The normal way of calculating due date is by Nagele’s Rule, where you take the first day of your LMP, add seven days, then count backwards 3 months. Other pregnancy calendars might give you a few days difference. you have ask: Am I Pregnant? 10 things to say to a pregnant woman So, You can see how early can you take a pregnancy test and use free pregnancy calculator :