I am 1 day peroid late i have not been feeling myself i been vomiting all day and vomiting acidy thing now am discharging mucous plug plz help?

Take a test: If you think you might be pregnant check then check a home pregnancy test. They are cheap, reliable and available at any pharmacy. If negative consider seeing your primary care doctor for what sounds like a gastrointestinal illness. After the vomiting has been triggered you can address your vaginal discharge and irregular menstrual cycle.