levels of 8 is absolutely normal and there is nothing to worry about it.
breast feed jaundice
is a physiological thing which normally occurs in almost all babies on exclusive breast feeding. but this usually subsides within 2weeks.
first get the bilirubin
levels checked by a doctor and if they are really high then the cause for this has to be investigated.
if your child is playful and accepting 8-10 breast feeds/day then no need to worry...