Delayed menstruation and feeling hot, is currently considered more likely to be pregnant, because after pregnancy, the body’s progesterone level will be higher, when the high progesterone will lead to a rise in basal body temperature, usually 0.3-0.5 ℃, so early pregnancy pregnant women will be obvious body heat. If you are not pregnant and have an elevated basal body temperature, it may be due to ovulation, when the basal body temperature will rise after ovulation, usually around 37 ℃, it is recommended that after the menstrual period is delayed for 1 week, the use of pregnancy test paper to test whether you are pregnant or go to the hospital to take blood to check the HCG. of course, the body fever at the same time, cold, weakness and other symptoms, but also because of the cold, fever and other reasons, then you need to pay attention to Keep warm, rest more, and in serious cases, go to the hospital or take oral medication.