You cant really tell if youre pregnant or not until you miss a period. That is fifteen days after the first date of your period. It will further reduce down to plus or minus 3 weeks. This is done in real-time and is a fairly standard procedure that is part of prenatal care in many countries, as it can provide information about the health of the mother and embryo/fetus, as well as the overall progress and timing of the pregnancy. In the case of sexual intercourse, sperm remains viable inside a woman's body for up to 5 days (possibly 7 days in some cases). Check out our Zodiac Center! Not all women have the same cycles of menstruation and ovulation. It affects your daily plans, holidays, and overall free time. And the reason why I say approximately is that conception happens when the egg and sperm meet up. That is 266 days from the conception date. An ultrasound, on a basic level, uses sound waves to create images of internal body structures. Calculate Results First Trimester Second Trimester Third Trimester The results you receive from this tool are for informational purposes only and should not be the basis of your medical decision making. As you track these changes in both body temperature and cervical mucus, you'll begin to make out your own biological pattern. We can help parents determine paternity without going to court. Chapter 818. This great tool can determine the probable conception date by using simple data from the menstrual cycle or just a simple birthday, depending on what you need to find out. Enter the day your baby was born and at how weeks of pregnancy the delivery was, and we will automatically calculate a range of dates when sex likely happened, when the baby was conceived, and the implantation date range. You don't have to do the calculations by hand! Get this ultrasound as soon as possible, as ultrasounds in the first trimester and beginning part of the second trimester tend to provide a more accurate estimation of the week of conception. Then note the length of the cycle until your next period. But even ultrasounds and blood tests aren't faultless. Into astrology? The second way to establish parentage is to start a court action.