semik

I had been getting nauseous and stomachaches every time after I ate. Well it lasted like a week and I used the bathroom at the end of like 7 days and had a lot of diarrhea and then I was fine for like a week. Then like a week later i woke up nauseous and that night I threw up a lot . Any way , i went to emergency and they discharged me with intractable vomiting and high white blood cell count. They said because my white blood cell count was high (15,000) there was for sure an infection. They told me to go to my real doctor and anyway 4 days later I went feeling a little better and they told me my white blood cell count was back to normal and that it most likely was just a stomach virus. Well anyway like 4 days later i still have very small appetite and still get little nauseous.
My main question is... the fact that my white blood cell count is back to normal.... should I worry?