35 days of pregnancy is equivalent to 5 weeks of pregnancy, for women with stable menstrual cycles, the pregnancy sac can usually be seen on ultrasound at 5 weeks of pregnancy. 35 days of pregnancy belongs to the early pregnancy, the menstrual cycle is more stable women at this time can see the pregnancy sac through ultrasound, in 6 to 7 weeks of pregnancy to check the fetal heart, fetal buds, to determine the intrauterine pregnancy, it is recommended that early pregnancy can be combined with the blood HCG, progesterone and other tests to determine the development of the fetus, and it is recommended to supplement the folic acid to prevent fetal neural tube defects in the early stages of pregnancy. For women who have irregular menstrual cycles, they may not see the gestational sac on the 35th day of pregnancy, at this time there is no need to be overly nervous, and can be rechecked again in a week. Early pregnancy is prone to preeclampsia, try to avoid exertion, late night, heavy physical labor, diet to achieve balanced nutrition, avoid smoking and alcohol, to determine the pregnancy needs to be to the nearest hospital to build a file, regular obstetric examination.