Hi, have been to dr last week feeling very sick, weak, shakie like i have had a bug the old saying feel like been run would fit tablets not worked?

Many possibilities: If you have a fever and feel ill you could have an infection that is not responding because it is viral. If not but still feel weak and shakey you could be suffering from low blood sugar. Low blood pressure can also cause such symptoms. Look carefully at your life, diet, sleep, exercise, stress and see if you can find areas that need to be improved. Avoid tobacco, alcohol, and fast food.