I am 11 weeks pregnant with my second. I currently drive 86 miles one way to my job, a total of 172 miles a day. A first I thought I could handle it, but with morning sickness and fatigue I feel overwhelmed. My boss and OB said they don't think that it's an issue, but the truth is I am struggling. I don't know what else to say to prove that I need a break from time to time. My boss told me to "just handle it". How many miles driving a day is safe for a pregnant lady?