Long neck lines and darkened armpits during pregnancy are not directly related to having a boy or girl. Long neck lines and darkened armpits during pregnancy are considered to be related to changes in hormone levels in the body. Pregnancy is a special time when the hormone levels in a woman’s body change after pregnancy in favor of conceiving a fetus. Changes in the level of hormones in the body may lead to abnormal skin color, and many careful women will find that the armpits, neck, groin, areola and other places that usually have a lot of pigment may deepen in color and look darker. Neck lines may appear as a result of the increase in estrogen and progesterone in the body after pregnancy and a decrease in the elasticity of the skin. If there is no discomfort, no special treatment is needed. It is recommended that you pay attention to your diet and increase the intake of vegetables and fruits, which can supplement the nutrients needed by the body during pregnancy and also facilitate the development of the fetus. You should also go to the obstetrics department of the hospital for regular checkups to understand the development of the pregnant woman and the fetus.