<s>[INST] what is best sleeping position to prevent fluid from accumulating in my lungs.  I am 63 years old, Never been a smoker, All xrays and test have ruled out TB, Bronchitis. I cough a lot in the morning due to fluid accumulation on a scar or stain on my lungs [/INST] Hi.The fluid collected in your lungs in this case.might be to the gastric problems,reflux.May you should do a procedure called fibrogastroscopy to explore the stomach better.And for this the best postion for sleep would be with two pillows behind your head,don't eat dinner so late,don't drink alcohols and don't smoke,no spicy food.I hope it will be helpful Thank you Dr.Jolanda </s>