You should see a doctor. Maybe a gastroenterologist who could be able to help you.
When you're experiencing these symptoms, it could be wise to eat on time. Eat on a schedule, do not starve, do not over eat, and do not go to bed hungry or on a full stomach.
I had very high insulin levels because I have issues with Lyme disease also my work would lead me to starve myself, and then over eat, and then sleep. It really screwed up my whole body and now I have diabetes and screwed up insulin levels. By the way, doctors don't test for high insulin, only blood sugar.
You need help. Over time the acid coming up from your stomach (called GERD) will cause the esophagus to be irritated and erode and can cause a condition called Barrett's syndrome which can lead to cancer.
My mom has that same issue, and she would sleep and wake up coughing and choking as the acid would enter into her lungs.
You may want to sleep on a wedge to keep the acids from sneaking into your lung or esophagus while you sleep. You may not have coughing, but may feel a little heart burn. Seriously need to see a doctor, because it can become a slow chronic issue that lead to bigger problems later on.