I have been eating healthy and working out since the first of the year and have lost 40 pounds , I went on vacation and went way off track , but other than gaining a few pounds , I was fine. Now I am back eating right & working out again and I have had an upset stomach for the past 2 days ( my husband & I have eaten the same foods) I have taken peto , not eaten alot and still have black diahrrea ( spelling sorry ) I feel sick and the other night I had chills and fever , that is gone , but not the upset tummie & unusual bowl habits. Should I call my Dr. ?