--- title: When Did I Conceive? description: While there’s no hard science to find the absolute moment of conception, there are a few ways that can help you determine when you conceived. image: https://ndwomensclinic.com/hubfs/Imported_Blog_Media/When%20did%20I%20conceive.jpg --- [Skip to Content](https://ndwomensclinic.com/helpful-advice/when-did-i-conceive#main-content) - [Call Us: (262) 725-6977](tel:+12627256977) - [Text 24/7: (262) 300-7796](sms:+12623007796) [![Asset 1](https://ndwomensclinic.com/hubfs/Asset%201.svg)](https://ndwomensclinic.com) - Show submenu for SERVICES SERVICES - [Abortion Information](https://ndwomensclinic.com/abortion-options) - [Pregnancy Testing](https://ndwomensclinic.com/free-pregnancy-tests) - [Ultrasounds](https://ndwomensclinic.com/free-ultrasound) - [STD Testing](https://ndwomensclinic.com/std-sti-testing) - [Parenting Support Services](https://ndwomensclinic.com/prenatal-parenting-support) - [After Abortion Healing](https://ndwomensclinic.com/after-abortion-recovery) - [Abortion Pill Reversal](https://ndwomensclinic.com/abortion-pill-reversal) - Show submenu for FAQs FAQs - [First Appointment Expectations](https://ndwomensclinic.com/what-to-expect) - [About Abortion](https://ndwomensclinic.com/about-abortion) - [About STDs](https://ndwomensclinic.com/about-stds) - [About Pregnancy](https://ndwomensclinic.com/about-pregnancy) - Show submenu for LOCATIONS LOCATIONS - [Delavan](https://ndwomensclinic.com/delavan) - [Whitewater](https://ndwomensclinic.com/whitewater) - [HELPFUL ADVICE](https://ndwomensclinic.com/helpful-advice) - [ESPAÑOL](https://ndwomensclinic.com/español) [make appointment](https://ndwomensclinic.com/make-appointment) Show submenu for SERVICES SERVICES Show submenu for FAQs FAQs Show submenu for LOCATIONS LOCATIONS [HELPFUL ADVICE](https://ndwomensclinic.com/helpful-advice) [ESPAÑOL](https://ndwomensclinic.com/español) [make appointment](https://ndwomensclinic.com/make-appointment) # When Did I Conceive? ![When Did I Conceive?](https://ndwomensclinic.com/hubfs/Imported_Blog_Media/When%20did%20I%20conceive.jpg) So, you’re pregnant. Now you’re wondering: *When exactly did I conceive, and how can I be sure who the father is?* Need to talk through it with someone? Text [(262) 300-7796](sms:+12623007796) to connect with a nurse for free.   You’re not alone in asking these questions. While there’s no exact science for pinpointing the moment of conception, there *are* ways to estimate it based on your body’s natural cycles.   ## What Date Did I Conceive? Whether you’re early in your pregnancy or further along, there’s a simple way to estimate when conception likely happened. Typically, ovulation—the window when pregnancy can occur—happens about two weeks after the start of your last menstrual period. Most people ovulate for about 2 to 3 days per cycle. That’s when your body releases an egg and is most fertile.   ##### Conception Date Calculator If you know the **first day of your last period**, you can estimate your ovulation window, and that gives you a general idea of when you may have conceived. Don’t worry if math isn’t your thing. There are free online conception calculators that can help, or you can text us at [(262) 300-7796](sms:+12623007796), and we’ll walk you through it. Just remember: cycles can vary. Some people ovulate earlier or later than average, and the timing can shift from month to month. What’s “normal” looks different for everyone. Also, sperm can live inside your body for up to five days. So even if intercourse happens *before* ovulation, it can still result in pregnancy.¹ ²   ##### Conception Calculator First Day of Your Last Period: Average Length of Cycles: Calculate     ##### Conception Date from Ultrasound Ultrasound is another way to estimate when you conceived—and it’s usually more accurate than a calendar guess. That’s because early fetal development tends to follow a consistent timeline.³ An [ultrasound](https://ndwomensclinic.com/free-ultrasound) can measure the size of the fetus and estimate how far along you are. It also checks for key things like viability (whether the pregnancy is progressing normally) and whether it’s ectopic (developing outside the uterus). You can get an ultrasound at an OB-GYN office, but it might involve scheduling, billing, and insurance. Many local pregnancy centers offer [free ultrasounds](https://ndwomensclinic.com/free-ultrasound) without the extra steps.   ##### Get Help Determining Your Conception Date If you're trying to figure out when you conceived—or you just want to talk through your options—[we’re here for you](https://ndwomensclinic.com/request-a-consultation). Text [(262) 300-7796](sms:+12623007796) to connect with a real, certified nurse who can help you understand your pregnancy timeline and answer any other questions on your mind.   ###### Sources: 1. https://www.mayoclinic.org/healthy-lifestyle/getting-pregnant/expert-answers/ovulation-signs/faq-20058000 2. https://my.clevelandclinic.org/health/articles/23439-ovulation 3. https://my.clevelandclinic.org/health/diagnostics/9704-ultrasound-in-pregnancy   ![light logo](https://ndwomensclinic.com/hubfs/light%20logo.svg) **Get In Touch** - [Contact Us](https://ndwomensclinic.com/contact) - [For Donors](https://ndguardians.org/) **Delavan Location** 824 E. Geneva St. Delavan, WI 53115 [Get Directions](https://maps.app.goo.gl/GzMA7xyEXFvnBdUs7) **Whitewater Location** 117 S. Second St. Whitewater, WI 53190 [Get Directions](https://maps.app.goo.gl/Dp6uaXxJ5DnMhcVL6) **Here For You** While New Day Women’s Clinic offers information on the different types of abortions, we do not perform or refer for abortions. Medical services are provided under the direction of: Dr. Chad A. Kort, MD Medical Director © 2026 New Day Women's Clinic. All Rights Reserved. - [Privacy Policy](https://ndwomensclinic.com/privacy-policy) ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "New Day Women's Clinic", "url" : "https://ndwomensclinic.com/helpful-advice/author/new-day-womens-clinic" }, "dateModified" : "2025-10-22T20:15:16.256Z", "datePublished" : "2025-08-07T16:10:04.000Z", "headline" : "When Did I Conceive?", "image" : [ "https://ndwomensclinic.com/hubfs/Imported_Blog_Media/When%20did%20I%20conceive.jpg" ], "mainEntityOfPage" : { "@id" : "https://ndwomensclinic.com/helpful-advice/when-did-i-conceive", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://ndwomensclinic.com/hubfs/Asset%201.svg" } } } ```