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I can understand your concerns.
1. Your child is now 9 days old. Since, both mother and child have same blood group, there are less chances of pathological hyperbilirubinemia.
2. On the 9th day of life, the bilirubin level of 15.36 does not require phototherapy and only repeat bilirubin after two days is recommended.
3. However, we have to look for some more things like whether it is direct or indirect bilirubinemia. What is DCT (direct Coombs test) report?
I advise you to attach the full report so that a clearer answer can be given. If all things are normal, then this is physiological bilirubinemia and only repeat bilirubin level after two days needs to be done.