Thank you for your query,
Don't be panic as there is no reason to think for leukemia
in your child.
I think the low count corresponds to low hemoglobin
and your doctor have started some supplementation like iron and vitamins
Don't worry and discuss with your concerns with your Pediatrician
, so that she will undestand your worries and reassure you regarding the causes for low count.
Hope I have answered your query.