You'll be offered ultrasound scans in pregnancy, including the mid-pregnancy anomaly scan offered between 18 weeks and 21 weeks and 6 days. You might hear some people call this the "20-week scan".
Bleeding from the vagina may be a sign of serious problems, so seek help if you experience vaginal bleeding in pregnancy.
You at 18 weeks
Stomach (abdominal) pain in pregnancy is common, and can be caused by constipation, wind, or "growing pains" as your ligaments stretch to support your growing bump. But abdominal pain can sometimes be a sign of something serious.
You may also get headaches in pregnancy. This is common, but could be a sign of something serious if the headaches are severe.
Your baby at 19 weeks
Your baby is putting on a bit of weight, but still does not have much fat, so if you could see your baby now, they would look a bit wrinkled. The baby will continue to put on weight for the rest of the pregnancy and will "fill out" by the last few weeks before birth.
You at 19 weeks
You might feel your baby move for the first time when you're around 17 or 18 weeks pregnant. If this is your first baby, you may notice the first movements between 18 and 20 weeks pregnant.
At first, you feel a fluttering or bubbling, or a very slight shifting movement. Later on, you cannot mistake the movements, and can even see the baby kicking about. Often, you can guess which bump is a hand or a foot.
There's no set number of baby movements you should feel. The important thing is to get to know your baby's usual pattern of movements. Once you start to feel your baby's movements, you should feel your baby moving right up until they're born.
If you think your baby is moving less than usual or there is a change to your baby's usual pattern of movements, call your midwife or maternity unit immediately. Your baby will need to be checked. Do not use a home handheld scanning device (Doppler) as these are not reliable – even if you hear a heartbeat, it does not mean your baby is well.
Your baby at 20 weeks
By 20 weeks, your baby's skin is covered in a white, greasy substance called vernix. It's thought this helps protect the skin during the many weeks in the amniotic fluid.
You at 20 weeks
At 20 weeks pregnant, you're halfway through your pregnancy. You may develop a dark line down the middle of your tummy. This is normal skin pigmentation as your tummy expands to accommodate your growing bump.
Normal hair loss slows down, so your hair may look thicker and shinier.
You can find more information on pregnancy in the 'Your Pregnancy and Birth book'.