I Have Diabetes (my Dr Considers Low Grade) Take Metformin

I have diabetes (my dr considers low grade) take metformin victoza prandin and 2.5 mg ramipril. One month ago respiratory infection heavy cough productive green yellow to grey still coughing mostly dry but heavy cough. Suddenly sweating overnight sheets drenched very low energy weight loss headache every morning wake up take 4 advil gel caps. Generally feel very weak.