How Pregnant am I?

By Katie Roebuck

January 27, 2020

I am the mother of two children, an RN, Prenatal Educator, Lactation Counsellor, and Sleep Coach. My nursing career has been focused on Maternity and Obstetrics. I am based in the Niagara Region and I enjoy helping moms reach their goals with pregnancy and motherhood!

How Pregnant am I? Calculating how far you along in your pregnancy is important for many reasons. The main reason is to know when we can expect your baby to arrive, which typically happens around your due date. Based on this date, you will also have certain tests scheduled throughout your pregnancy to ensure you and baby are growing, healthy, and well. Also if you happen to give birth preterm, how far along you dictate how you and your baby will be cared for, and even can require you to give birth at another hospital entirely.

Many people discuss their pregnancies in how many months they are, but a lot can happen in a month! So it’s better if you figure out how many weeks you are to keep better track.
Each Trimester has 3 months in it, and each month has 4 – 5 weeks of pregnancy in it. The way to help figure this out is once you calculate your due date, use that day of the week. So if you’re due date is a Monday, that Monday is the day you are 40 weeks and Zero days pregnant. Every Monday going back from that is the start of a new week. We count the days too, but you don’t need to worry so much about that part.

We’ve created an infographic to help you break down what trimester, month and week you are in with your pregnancy.

But wait…did you see it? Pregnancy can be 10 MONTHS, not nine! Sorry to break the news to you, but yes it’s true! Because your pregnancy starts on the first day of your last menstrual period, even before you actually conceive, it makes the entire pregnancy 10 months long if you go over your due date.

Most people will give birth between 39 – 41 weeks of pregnancy unless there are medical issues that require an earlier birth date. If you have not given birth by the time you are 41 weeks pregnant, your doctor or midwife will most likely book an induction of labour. The risks of complications for you and baby increase as you approach and pass 42 weeks of pregnancy so we like to ensure baby is safely earthside before then.

So how do we figure out your due date? Most of the time we work from the first day of your last period and calculate 40 weeks from there. However, if your menstrual cycle is irregular, is longer than 28 days, or if you conceived within 3 months of coming off of birth control, then your first-trimester ultrasound will dictate your due date. After 13
weeks of pregnancy, your due date should not change based on any further ultrasounds. The further along you are in your pregnancy, the less accurate an ultrasound is in dating your pregnancy.

What to expect in the end of your pregnancy and birth including inductions is covered in every prenatal class. Want more info? Contact your local mama coach.

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