Suggest Treatment For Constipation, Nausea, Diarrhea And Chest Discomfort

hello i dunno whether to go down to a and e or not av had constipation followed by diererear sorry bout spelling it switches between the two but i feel nausaus and was wandering if it is related to a hospital bug or parasite infections pain in my right lower side with chest discomfort and pressure headaches also although the pressure headaches and chest discofort has been there longer