Ovulation is normally in the middle of the menstrual cycle. According to the usual menstrual pattern, pregnancy is considered when the period is delayed and the early pregnancy test is positive. When the period is delayed for about ten days to confirm pregnancy, you will have symptoms such as nausea and vomiting and drowsiness. The normal menstrual cycle is thirty days and ovulation is around the fourteenth to sixteenth day of menstruation. After normal intercourse until the next period should come, but postpone the future, you should test the morning urine with early pregnancy test paper, if positive, you should go to the hospital in time to draw blood to confirm the diagnosis, such as pregnancy, obstetrics projection of pregnancy week will start from the first day of the last menstruation, that is, thirty days of pregnancy, generally to about forty days will appear early pregnancy reaction, such as nausea, vomiting, stomach discomfort, belching, drowsiness, individual women will appear earlier, or have Some women may have symptoms similar to the flu, so don’t take medication on your own at this time, but make sure you are pregnant first.