Conversation: The conversation between human and AI assistant.
[|Human|] The first day of my last menstrual cycle was September 21.  I had sex on September 30, October 3 and several time after.  I have a 32 day cycle.  Could I have gotten pregnant on September 30 or October 3rd? I am trying to figure out the closest possible due date.
[|AI|]  Hello, and I hope I can help you today. Contrary to what many women think-ovulation does not occur on day 14 of a women's cycle... it happens 14 days before the start of your period. So if you have a 32-day cycle and your last period was September 21, you likely ovulated 14 days before your period would be due for October (the 23rd) which means you likely ovulated around Oct. 9th. The BST way to know for sure, however, is with an ultrasound (you must wait until at least 5-6 weeks of pregnancy) which can measure the fetus and make the most accurate estimate of your due date. I hope this information was helpful, and best wishes for the pregnancy,