The causes of nausea symptoms during ovulation are as follows: 1, if you do not take contraceptive measures during ovulation and take emergency contraceptive pills after ovulation, there is a possibility of nausea symptoms. This is a side effect caused by taking the emergency contraceptive pill, which disappears after one day of taking the emergency contraceptive pill.2, some women in the follicular fluid into the pelvic cavity after ovulation, stimulation of the pelvic peritoneal tissues will cause abdominal pain symptoms, pain symptoms will be accompanied by nausea symptoms in severe cases.3, in the ovulation period, if the hormone level fluctuates greatly, it may also be due to the stimulation of the hormones cause nausea, loss of appetite and other gastrointestinal symptoms.4, usually, the hormone level fluctuates greatly, but also because of the stimulation of the hormones. 4, usually patients with salpingitis, endometritis and other gynecological inflammatory diseases, into the ovulation period due to the pelvic tissues slightly congested, stimulation, caused by the fallopian tubes, uterus contraction and cause nausea symptoms.