Babies develop incredibly fast in the early weeks of pregnancy, so what you will see will depend exactly when you attend for your scan. We provide early reassurance scans from 7 weeks, if you are unsure of your dates you can always phone reception to assist when to book in for your scan on 0151 531 6472.

4 weeks:

The lining of the womb will become thickened and slightly brighter than in the “non pregnant” uterus.

5 weeks:

A small “black hole” (the gestational sac) will appear within the lining of the womb.

During this week a small white circle will appear within the gestational sac – this is called the “yolk sac” . This will provide nourishment for the developing embryo in the first trimester of pregnancy.

6 weeks:

At just over 6 weeks gestational age, the embryo should develop a heartbeat (by the time the embryo measures 7mm it should be beating!)

Although, sometimes we can scan and see things doing a transabdominal scan (tummy scan with full bladder) the best way to scan this early in pregnancy is to do a transvaginal scan. This does not compromise your pregnancy in any way, but allows us to use a higher frequency ultrasound probe which enables us to see smaller things more clearly.

7 weeks: 

The embryo is about 1cm long and already has a beating heart, but it won’t look much like a baby yet. For many of you, this week is the time that you will start to feel more noticeable signs of pregnancy (nausea, swollen /tender breasts, increased urination, fatigue etc.)

8 weeks: 

The embryo is 1.6cm long and is starting to change shape, with two rounded areas that will develop into the head and body. Baby’s arms, legs, fingers and toes are all becoming more defined.

9/10 weeks: 

This is when the embryo officially becomes a fetus, it’s also the first time you’ll have a chance to distinguish the head, body and limbs on an ultrasound scan. However, your baby still has a long way to go so you should expect to see lots of changes by your next scan.

Early pregnancy scans are important to attain reassurance as a mother and to be able to take possible precautions where necessary to help with a safe and healthy pregnancy.