I woke up last night in a panic with a very watery mouth, had to swallow constantly for 30 seconds. this happened 3 times. why?

Water Brash: Your symptoms may be a manifestation of gastro-esophageal reflux or stomach ulcer. It would be useful to see a doctor. If you are overweight, try to lose weight, even though it is not easy. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.