Patients
Doctors
Check when conception occurred. Select the date of the first day of your last menstrual period:
Results
Conception probably occurred around:
(Approximately two weeks after the start of your last menstrual period)
The period of greatest risk for birth defects: to
Five to ten weeks gestation (the number of weeks since your last menstrual period)
5 weeks pregnant:
10 weeks pregnant:
11-14 weeks pregnant:
23 weeks pregnant:
27 weeks pregnant:
40 weeks pregnant:
