Figuring out how far along you are in your pregnancy typically involves counting weeks and days. It can feel a bit confusing, especially at the beginning, but once you know the starting point, it becomes much easier to keep track of what's happening when.

The most common method used in healthcare is based on the first day of your last menstrual period (often abbreviated as LMP). Pregnancy is counted from that day, even though conception usually occurs later.

• Find the date of the first day of your last menstrual period
• Count the number of weeks and days from that date to today
• The result is often stated as, for example, 9+3 (9 weeks and 3 days)

If your cycle is longer or shorter than average, the week count can still be a good guide, but it may be adjusted later.

If you already have a due date (e.g., from a doctor or midwife), you can also calculate "backwards" to find your current week of pregnancy. A pregnancy is often considered 40 weeks from LMP to due date, but the due date is an estimate, not a guarantee.

• Due date minus today's date gives you approximately "how much time is left"
• Once you know how many weeks are left until week 40, you can find out which week you are in now

If you are in doubt, your midwife can help you determine the exact week and day.

Many are offered an early scan where the pregnancy can be dated. Ultrasound dating can be particularly relevant if you are unsure of your last menstrual period or if your cycle is irregular.

During an ultrasound, the size of the fetus is assessed against developmental standards. If the measurements better fit a different calculation than LMP, your due date and thus week indication may be changed. This is normal and ensures the most accurate plan for the rest of the pregnancy.

Once you know how far along you are, you can also place yourself in a trimester. This is a practical way to understand pregnancy in phases, without it having to feel like an exam.

• 1st trimester: week 1 to 12
• 2nd trimester: week 13 to 27
• 3rd trimester: week 28 to birth

The trimester division can help you plan examinations, prepare your body for changes, and choose comfort that suits your current phase.

If you have several possible dates or are just unsure, you can use this order:

1. Use LMP as a starting point, if you know it
2. Note cycle length and any irregularities
3. Use a scan for clarification if the dates don't make sense
4. Ask your midwife or doctor if the uncertainty makes you uneasy

The most important thing is not to get it "perfect" yourself, but to have a useful starting point that healthcare professionals can support you with.

As your body changes throughout the weeks, it can be nice to have solutions that adjust with you. If you are in a phase where your belly and lower back are starting to feel more prominent in daily life, a support belt might be relevant, for example, the Maternity Support Belt, or you can see more options under Support Belts. And as your breasts change, many choose a soft, seamless maternity and nursing bra without underwire, for example, the Gel-Support Maternity & Nursing Bra, which is designed as a supportive alternative to metal underwire, without blocking the milk ducts.