6 weeks pregnant
Enter the first day of your last period to get a due date and the current week. The example here follows a person who is at week 6.
How it works
Add 280 days to the first day of your last period to get the due date. To find the current week, count the days since that day and divide by 7. Here 6 weeks times 7 is 42 days.
Worked example
Say the first day of the last period is 19 June. The due date is 280 days later, on 26 March. After 42 days the date is 31 July. 42 divided by 7 is 6. That is the start of week 6. The 238 days left run to the due date. This example uses a 365-day year.
Common questions
What if my cycle is not 28 days?
The 280 day rule assumes ovulation near day 14. If your cycle is much longer or shorter, your doctor may adjust the due date, often with an ultrasound. With a 35-day cycle some clinicians add 7 days, which would move 26 March to 2 April.
Does a leap year change the due date?
It can. A year with an extra day in February moves dates after that day by one. The calculator above uses the real calendar for your dates. If the span from 19 June includes a 29 February, 26 March reads one day earlier, as 25 March.
How many months is 6 weeks pregnant?
About 1.4 months. A pregnancy is 40 weeks, a little over 9 calendar months. Months are only a rough guide. At 6 weeks there are 238 days to the due date.
Which trimester is week 6?
First trimester. The first trimester covers weeks 1 to 13, the second covers weeks 14 to 27 and the third runs from week 28 to the birth. Week 6 is week 6 of the first trimester.
Why do weeks start from the last period and not conception?
Most people know the date of their last period but not the day of conception. Counting from the last period gives everyone the same starting point. A pregnancy is about two weeks longer on paper than from conception. Counted from conception, this would be week 4, which is 28 days.