Vomiting acid in the middle of the night can only indicate more secretion of stomach acid, probably chronic gastritis, gastric indigestion, not necessarily pregnancy. Some women are pregnant, in the early pregnancy body progesterone secretion is strong, easy to stimulate the gastric mucosa, affect the digestive function, appear digestive function is reduced, stomach heat, acid reflux, aversion to greasy food, etc., appearing in the middle of the night acid reflux can not indicate that must be pregnant. If you have delayed menstruation, have intercourse during ovulation, and have not taken any contraceptive measures during intercourse, it is recommended to consult an obstetrician and gynecologist, and cooperate with the doctor to do a urine pregnancy test or a blood test to check the blood HCG to diagnose whether you are pregnant or not, and you cannot judge whether you are pregnant just by some symptoms of your body. The specific symptoms of pregnancy are different for everyone, and there are more symptoms of pregnancy reactions without specificity.