Patlets got down to 0. 87 L/mm3. Fever.

My daughter had fever on 3 jul 2019 on Friday evening since 6 days before . And it got subsidised on 6th jul 2019 mid night on Saturday . From that Saturday mid night she didn't have fever. CBc happened on Saturday afternoon, in that report we see Platelet count is at 1.20 L/mm3. At that she has fever and not active. But after fever gone at Saturday, she didn't get fever till now. And The intake food, urin and motion is good. And also baby is  active. But on Monday (yesterday) again we revisited to doctor for checking child condition . My daughter had fever on 3 jul 2019 on Friday evening since 6 days before . And it got subsidised on 6th jul 2019 mid night on Saturday . From that Saturday mid night she didn't have fever. CBc happened on Saturday afternoon, in that report we see Platelet count is at 1.20 L/mm3. At that s count got decreased to 0.87 L/mm3. Even the fever gone 2 days back. Now may i know what is the problem in my child health. PFA test results in fever and after fever.