If you eat ice cream when you have your period, it will cause the following symptoms: First, it will cause dysmenorrhea, mainly because the temperature of ice cream is below 0℃, and suddenly it enters the gastrointestinal tract, and the body temperature is above 30℃, so this cold stimulation will lead to contraction of the smooth muscle of the gastrointestinal tract, and it may also lead to contraction of the smooth muscle of the uterus, so there will be the possibility of dysmenorrhea. Second, because the cold stimulation will lead to vasoconstriction, so it will lead to a sudden decrease in the amount of menstruation, or in the case of someone who is relatively sensitive, it will lead to a sudden clean menstruation. So do not eat ice-cream during menstruation, give warmth during menstruation, and it is also recommended to soak your feet in hot water every day to relieve fatigue during menstruation. And it can make the menstrual blood flow more smoothly and reduce the uncomfortable feeling during menstruation.