2 cbc tests showed low rbc (3.77) hemoglobin (11) and hematocrit (32.5!) 2 docs and 1 neuro said that's normal. anemia? other causes of these levels?

Very mild anemia: It will depend on the normal range of hb used at your laboratory where you have the test done. At my lab- the normal range used is between 12-15, so hb of 11 is only mildly anemic. It is nothing to worry much about however. In young woman like yourself- with your monthly period, you lose some iron in every cycle. This can cause mild anemia. Check your iron and take multi vitamin. D/w your md.