I am almost 5 months pregnany and my ob sent me to a hematologist because I have a low platelet count. In the last month they fell from 87,000 to 41,000 today. My doctor said it was pregnancy induced and put me on steroids last week when my count hit 56,000. Today they fell again to 41,000 after a week of steroids at 20milligrams a day. Should I be worried? What is considered critical? Can this harm my unborn daughter? Should I get a second opinion.