By the end of week 12, your baby is still only around the length of your thumb, but all the major organs and limbs are fully formed. Fingers and toes have fully separated and there are even tiny fingernails. The baby is kicking and stretching a lot, but you won't be able to feel it for another few weeks.
Usually you'll have your first official antenatal appointment around week 12. It's sometimes called the "booking visit", because it is when your midwife or doctor makes arrangements for your care up to and after the birth. At this stage of your pregnancy at 12 weeks you should be thinking about your birth plan - your ideas about how and where you would like to give birth. Depending on what antenatal and birth facilities are available in your area, your midwife will try to arrange for you to have the type of birth you would like. For example if you would really like a water birth, you should be booked into a maternity unit or hospital that has a birthing pool, if there is one in your area.
During pregnancy, you might have some uncomfortable side effects. Fluctuating hormone levels can disrupt the balance of bacteria in your vulval area, leading to infections such as thrush. Usually it is fine to use antifungal creams on the skin to treat thrush, but speak to your pharmacist or GP first. Antifungal oral tablets and pessaries (inserted into the vagina) are not recommended during pregnancy.