If you're concerned that your baby is not getting enough oxygen in the womb, it’s important to speak to your doctor or midwife. They can perform tests to measure the oxygen levels in the baby's umbilical cord and your amniotic fluid. Additionally, they can also look for signs of fetal distress, which can indicate the baby is not getting enough oxygen. These signs may include an abnormal heart rate, decreased fetal movement, or changes in the baby's breathing pattern. If your doctor or midwife suspects your baby is not getting enough oxygen, they may suggest additional tests, such as an ultrasound or a fetal monitoring test. It is important to speak to your doctor or midwife if you are concerned, as they are best equipped to assess your baby's condition and provide you with the best advice.