Hello Sir , My Baby Is 3 Months Old And

hello sir , my baby is 3 months old and her weight is 5.5kgs .she is having greenish stools with mucous in it. i found only once slight traces of blood. went to doctor . he asked to get the stool test done.i have the report.in that
stool reducing substance: present(traces)
stool:ova-nil
cysts-nil
leucocytes-1or 2
rbc-0or 1
is that my lactose intolerance test is positive? shall i stop breast feeding? please answer iam so worried