Hello ! Sorry to know you have this issue... I also faced this and even felt the water heavy on my stomache. I even had vomit for 3 days and went to hospital to hydrate my body. Yet, the day I fixed the way I slept I never felt this again. Try to sleep at 45 degree, you head higher than your body. Moreover, a tip Our feeling for hunger and being full has changed than before... Whenever you feel your stomache nauseous and you haven't eaten for for than 2 hours, it means that you are hungry... That's it for me Please try to change the way you are sleeping and update us Sent from my SM-G935F using Tapatalk