If you are more than 20 days pregnant, that is more than 35 days after menopause, most people will have pregnancy reaction at this time. The main symptoms are nausea, vomiting, dizziness, weakness, drowsiness, lack of food and drink, aversion to acidic food, greasiness, fear of cold and so on. Some people have mild symptoms, which will disappear after a month or so by adjusting their diet and relaxing. Some people have more severe reactions and cannot eat or drink, so they need to go to the hospital for infusion treatment. There are also people who do not have any reaction, that is, they do not feel uncomfortable. As long as the fetal heartbeat and fetal bud are very normal when you have an ultrasound, it is normal.