Girls, I just had my blood test done. My hematocrit is lower than norm…

Girls, I just had my blood test done. My hematocrit is lower than normal. It should be between 36-45. Mine is 35.9. That's only 0.1 less. Have you guys experienced this too? What did you do? I can see the doctor only on the 21st. I read online that it could be anemia or iron deficiency, but online says otherwise. But I think it might be because I didn't eat anything healthy for two days.