Thanks for your query.
Your baby is having fever
and loose motion
which is mostly viral in nature and takes few days to settle.
Give oral rehydration solution sip by sip after each stools,give coconut water,lemonade,mashed banana.boiled potato.
Continue with acetaminophen
for fever till it is above 100F.
Continue with probiotic
,antibiotics are given in case any bacterial infection is there.
For rashes apply calamine
lotion 2 to 3 times a day.give antiallergic like benadryl
as per dosage.
Monitor her for features of dehydration
like any lethargy
,decreased urination,increased thirst and in case you find any get her evaluated by pediatrician
Wishing your baby good health.