Intestinal virus seems to act up again, I was sick again, please advise?

I was on here Yesterday about a stomach intestinal virus i have had since Monday! I went to my Doctor & she said that it was probably an intestinal virus that had to “run it’s course”. that was wed. I was ok. thursday & Friday. Friday I had chicken rice soup;a buttered roll;Mashed potatoes. i slept thru the night & then Saturday Morning i was sick again!1 sat. I just had Chicken Broth & Ginger Ale. This morning i was sick again. I am VERY WORRIED NOW!! DO YOU THINK THAT THIS IS REALLY SERIOUS? Should I get some blood tests?

Age: 74
Medications: Mycardis
General Information: Not Really.