When a woman is seven weeks pregnant, her breasts suddenly stop swelling, is usually an abnormal performance, mostly consider the abnormal phenomenon caused by pre-miscarriage or embryonic abortion. This is because the swelling of the breasts is mainly a physiological manifestation caused by the stimulation of estrogen and progesterone in the body. Due to the normal development of the embryo, estrogen and progesterone will continue to be at a high level, resulting in breast fullness, pain and other discomforts, usually lasts until about 6-7 months of pregnancy. And seven weeks of pregnancy breasts do not bloat, to consider the body’s hormone levels decline, and the resulting abnormal phenomenon. Therefore, you need to hurry to the hospital gynecology department to check the ultrasound to see the growth and development of the embryo.