Watch our video guide to Week 2 of your pregnancy journey:
What's Happening in Week 2?
Here's something that surprises many women: at "week 2" of pregnancy, you're not actually pregnant yet. Pregnancy is dated from the first day of your last menstrual period (LMP), so week 2 is the week your body is preparing for ovulation and potential conception.
Around day 14 of a typical 28-day cycle, one of approximately 20 developing follicles in your ovaries releases a mature egg. This egg travels down the fallopian tube, where it can be fertilised within 12-24 hours. If sperm meets egg, the resulting single-celled zygote — smaller than a grain of sand at just 0.1mm — already contains all 46 chromosomes that determine your baby's sex, eye colour, hair colour, and thousands of other characteristics.
Your Body This Week
Your body is doing important work behind the scenes:
- Oestrogen levels are rising, triggering a surge in luteinising hormone (LH) that causes ovulation
- Your uterine lining is thickening to prepare for potential implantation
- You may notice ovulation signs: mild one-sided abdominal pain (called mittelschmerz), clear stretchy cervical mucus, a slight rise in basal body temperature, or a heightened sense of smell
No pregnancy symptoms are present yet — it's simply too early for that.
The Fertile Window
If you're trying to conceive, timing matters. Your most fertile days are the five days before ovulation and the day of ovulation itself. Sperm can survive in the reproductive tract for up to five days, so intercourse in the days leading up to ovulation gives the best chance of conception.
Ovulation predictor kits (available from any pharmacy) detect the LH surge that occurs 24-36 hours before the egg is released. Tracking your basal body temperature each morning can also help identify your pattern over several cycles.
Nutrition: Start Now, Not Later
The single most important supplement at this stage is folic acid. The HSE recommends 400 micrograms daily — talk to your GP about the right dose for you, ideally started at least 14 weeks before conception. Folic acid dramatically reduces the risk of neural tube defects such as spina bifida.
Other key nutrition priorities:
- Vitamin D: 15 micrograms daily (HSE recommendation)
- Folate-rich foods: dark green leafy vegetables, citrus fruits, beans and lentils
- Iron: lean red meat, poultry, fortified cereals
- Limit caffeine — the HSE advises no more than 200mg per day (about 2 cups of coffee)
- Avoid alcohol — the HSE advises there is no known safe level during conception and pregnancy
Common Questions
Can I take a pregnancy test at week 2? No — it's far too early. Home pregnancy tests detect hCG, which isn't produced until after implantation (around week 4). Wait until the day of your expected period or later for an accurate result.
Does it matter if my cycle isn't 28 days? Not at all. Cycles normally range from 21-35 days. If your cycle is longer or shorter, ovulation simply occurs at a different time. Your early pregnancy scan will provide accurate dating regardless of cycle length.
Should I worry about medications I've taken? Talk to your GP about any regular medications before trying to conceive. Many are perfectly safe, but some may need to be adjusted.
This article is for general information purposes only and is not intended as medical advice. Every pregnancy is different. Always consult your GP, midwife, or healthcare provider for guidance specific to your circumstances.
Planning to confirm your pregnancy? Book your Early Pregnancy Scan at Ultrasound Ireland when you're 7-10 weeks along.