QuestionI had protected sex using a condom with my ex boyfriend on sept 21st 2004, and unprotected sex with my new boyfriend on 3rd of october 2004.My last period then was on the 12th of sept and my cycle usually is 30 -32 days. My child was born on the 28th of june 2005. When did I conceive?
AnswerI can't answer your question based on the information you have provided. If you had an ultrasound prior to 10 weeks gestation, that would have given you the most accurate possible date. You can't calculate conception based on the birth date because normal gestation ranges from 37 to 42 weeks, giving you a 5-week window of possibilities, in your case from September 21 to October 26. Ovulation can occur anywhere from 8 to 18 days prior to your next period, which with 30-32-day cycles gives you a range from September 24 to October 6...a little smaller, but still not enough to rule out one father or the other in your case, since conception can occur from intercourse that takes place up to 5 days prior to ovulation.
If you are concerned about paternity, at this point you would probably be better off going by appearance, blood typing, or even DNA testing if necessary.
