I am still working at 31 weeks pregnant. My job is very physical. On Friday, I begin an assignment to trek over 2000 acres for scientific studies. I may be driving some of the way depending on conditions, but I am very worried about the heat. It is expected to be 107 F. Am I worrying over nothing? Maybe I've read too much about the dangers of heat while pregnant. I am so close and just want to protect baby. What would you do?