Chest pain in early pregnancy does not indicate whether the embryo is developing or not, even if there is a fertilization, as long as the HCG is elevated there will be chest pain. After pregnancy, the body’s hormone secretion will increase, which will produce a certain stimulation to the breasts, resulting in a feeling of swelling and pain in the breasts. However, this does not mean that the embryo is developing, because the HCG level will not return to normal immediately after the embryo stops developing, so it is possible that the breasts will continue to be swollen and painful. To check whether the embryo is developing normally in early pregnancy, a combination of a blood test for chorionic gonadotropin and an ultrasound is needed. This will allow you to visualize the development of the embryo and determine if it is developing normally. Early pregnancy need to be on time to do a good job of obstetric examination, abdominal pain or vaginal redness and other symptoms of discomfort should be timely consultation and examination, if there is a pre-eclampsia can be timely fertility preservation and therapeutic intervention. It is recommended to carry out the corresponding examination and treatment under the guidance of a professional obstetrician.