To know if a baby is okay at around 20 weeks of pregnancy, the main assurance usually comes from a 20-week scan (also called the anatomy or mid-pregnancy scan). This scan checks for the baby's development, including bones, heart, brain, spinal cord, face, kidneys, and tummy, and looks for signs of certain health conditions. It also assesses the placenta and blood flow in the uterus to ensure the baby is getting enough nutrients and oxygen. At 20 weeks, the baby is active and moving, with a heart rate between 120-160 beats per minute, and muscles growing. Mothers may start to feel baby movements soon if they haven't already. Common signs of a healthy pregnancy also include the absence of concerning symptoms like severe abdominal pain, bleeding, reduced baby movement later on, or severe headaches. If a pregnant person feels unsure about the baby's wellbeing, attending routine antenatal appointments, especially the 20-week scan, and communicating any worries or unusual symptoms such as bleeding, severe pain, or reduced fetal movement to a healthcare provider is important. In summary, the 20-week scan combined with regular prenatal care and monitoring symptoms are key ways to know the baby is okay at this stage of pregnancy.

If you want information specific to a different week or details on what symptoms to watch for at other stages, please specify.