Hi welcome to HCM.... Here according to history you can have viral gastritis like condition along with digestive problem... Along with doing Jim drink lots of water and fiber rich food like whole grain, wheat bran , carrot, spinach , apple etc.... Fruits more ... Gastric condition can lead reffered chest pain.... Take omeprazole for few days... Check your blood sugar level also along with blood pressure monitoring.... These two factors can lead dizziness , so these two investigation done ... Sometime viral flu also can lead these symptoms... In which congestive symptoms also present ...like rhinitis , cough etc.... Avoid gas forming foods like cabbage, cauliflower and onion.. If chest pain increasing chest x ray and ECG done.... Also investigate with CBC and CRP... Take healthy and balanced diet and avoid heavy exercise for few days.... Consult physician with keeping this in mind. Take care