Anxiety, breathless at early morning.

I am on BP med fir over 2years, have severe acidity issue. Having read on side effects of Pentacid etc, I stopped taking them regularly, now often taking once in 3days. I also take ayurvedic medicine. Still at times I will have to take Gelusyl at night on discomfort. I have to mostly sleep on my back as turning around, especially on my right side increases acid. Since over 2 months, a peculiar problem started. I would suddenly wake up at 3 or 5am, sleep totally gone, with severe anxiety, increased heart rate. I feel fear of death or insanity, it appears as if air has stopped blowing. Yet I will switch off the fan. I feel like I should wake up my wife or run outside. I would go to toilet, drink water, walk around but the anxiety will continue up to 30-45min. Noticed this didn't happen if I ate light in dinner. I am also recurringly having eye sores. I was recently diagnosed with pre diabetes and am taking telma 40, rozat5 and gesciblage500sr. am I going crazy?