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Size of Baby

Approximately 100micrometres although they can vary greatly from around 57micrometres up to around 200micrometres. This is approximately the thickness of a sheet of standard paper, or the diameter of a human hair.

Development of Baby

Fertilisation is the point that the sperm fuses with the ovum to form a zygote. This usually happens in the fallopian tubes and takes around 24 hours.

Maternal Symptoms

It is unlikely that you will experience any symptoms at this time although some people get a feeling of “knowing”, almost like a gut instinct, or intuition.

Things to Consider

If you are thinking about having a baby, it is recommended that you take a minimum of a Folic Acid supplement plus a Vitamin D supplement if you live in the UK and it is between September and April. You may want to consider taking a pre-conception multivitamin to help ensure that all of your vitamin levels are within normal limits. Having your vitamin levels within normal limits not only helps you to conceive, but also helps to reduce the risk of conditions such as Spina Bifida, a neural tube defect, in your baby. Your pregnancy is measured in weeks since the first day of your last period, so as ovulation occurs around 14 days after the first day of your last period, week 1 after fertilisation is week 3 and so on.

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