I am paranoid about dying from dry drowning. i drank a glass of water, could it have gone the wrong pipe. i didn't cough. pl help me?

Mental health: Clearly you are suffering from paranoia and anxiety. I strongly recommend you seek qualified mental health attention.

Could not have but..: That is a very unusual fear. I have never heard of that happening to anyone. Our bodies are designed to prevent food & water entering the trachea. In the rare circumstances when small amounts do you will definitely cough so if you did not cough it did not go down the trachea. I advise you seek treatment for your paranoia, starting with seeing a psychologist who treats phobias.