You can feel whether you are pregnant based on menstrual changes, appetite changes and breast changes, but you still need to check blood and urine HCG to confirm whether you are pregnant. 1. Changes in menstruation: After pregnancy, women will first stop menstruating, usually about 7 to 10 days after menstruation should be alerted to pregnancy. 2. Appetite changes: During pregnancy, due to the changes in progesterone and estrogen, there may be a frequent aversion to oil, resulting in a loss of appetite, which can cause nausea, vomiting and other symptoms. 3. Breast changes: Under the influence of progesterone, pregnant women’s breasts will gradually enlarge, the areola will darken in color, and there will be slight swelling and pain in the breasts, but it is usually not serious and does not require special treatment. If there is no contraceptive sex before, to be alert to whether the pregnancy you, you can first use the pregnancy test stick test, and then go to the hospital to do a blood test, and according to the human chorionic gonadotropin level changes to analyze whether the pregnancy.