Your due date is calculated by adding 280 days (40 weeks) to the first day of your last menstrual period (assuming a 28 day
Usuku ngenxa Kulinganiselwa ibalwa ngokungeza izinsuku 280 (amasonto 40) kuya osukwini lokuqala last isikhathi sakho menstrual (abazazisayo umjikelezo 28 ngosuku).