That is when ur egg will have met the sperm but sperm can survive in ur body for up to 7 days so if u had sex up to 7 days before Jan 27th it would have survived. To know ur due date u just need to know ur lmp
The app on her let's to go by the 1st day of ur last menstrual date and tells you the beginning band end date
The app on here let's to go by the 1st day of ur last menstrual date and tells you the beginning and end date.also baby center does it! Online.
That is when ur egg will have met the sperm but sperm can survive in ur body for up to 7 days so if u had sex up to 7 days before Jan 27th it would have survived. To know ur due date u just need to know ur lmp
Google conception calculator
The doc will also guesstimate
Take the first day one your lmp subtract four months, add seven days. That's what all calculators and doctors do.
Whoops I mean that's what they do to find due date. Do the opposite for what you're asking...
That lmp doesnt work if your iregular