paragraph 2:

Doctor Wang, female, diagnosed my child at 11:00 p.m. -->
Dr. Wang, a woman doctor, examed my daughter at 11:00 p.m.

After some lab tests of my child’s blood, doctor Wang said that the child’s blood appearance was a little bit high, and it was caused by bacteria infection.-->
After the blood test was done, Dr. wang said that the results (from the hemogram) were a little high, which according to her was caused by a bacteria infection.