@Cara my last period started on 18th Feb (previous cycle was 40 days). I got a positive ovulation test on 6th March. Am I best going off the 40 day cycle or ovulation date? Thank you xx
It's up to you really as what you calculate now will only be a rough guide until you have your first scan, once they do measurements they will give you a more accurate date. If you use a due date calculator that you can input either conception date or last period it should give you a rough timeframe. Id expect it'll be somewhere between the very end of November and first week of December
@Cara Thank you very much
They typically go of your last period until you have your dating scan then they will give you a more accurate due date, if your cycles are extremely long but you know when you conceived then that can help give a more accurate idea of your gestation before your scan