Why Have I Had Throat Pain, Uncontrollable Shaking, Painful Flatulence, Bloating, And Mild Infrequent Diarrhea?

I have had painful gas, bloating, and mild infrequent diarrhea since Monday. I thought it was related to my period because that also started on Monday. However, two nights later the gas is extremely painful, I have more diarrhea, my throat hurts and I am shaking uncontrollably. What do my symptoms mean?