See details: Your due date is not determined by when you had sex. Your due date is estimated based on your LMP. Add 280 days. If you know when you ovulated, you can add 266 days. This might be more accurate for you since you have longer cycles. There are lots of apps and calculators available that are easier and more accurate. do not count back 3 months and add 7 days. That is based on a 28 day cycle.
Answered 8/22/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
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2 doctors weighed in across 2 answers
A doctor has provided 1 answer
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