My sugar level is 409 after breakfast and sugar free tea...Kindly guide, what should I do. I m also having frequent urination sudden weight loss 1.5 kg?

HIgh sugar. Your diabetes is out of control. Get to an er as soon as possible and get started on insulin. If you are on oral agents for diabetes, they are not longer effective. If you are on insulin, you need to get your doses of Insulin revised upward. You are in a very dangerous situation with your symptoms of frequent urination and weight loss.