Stomach virus heart rate at 100. feel warm and weak no fever. dr says ekg is fine and heart rate is just from body feigning virus?is hr like this ok?

Yes: Heart rates vary under different circumstances, going slower when one is calm or sleeping, and faster under stress, anemia, fever, or when one is fighting an infection. These are normal bodily responses, and as long as EKG only shows fast heart rate there is nothing to be concerned about. The heart is not the issue- just responding. The underlying cause needs to be addressed.