diabetes??? dr called me back for 3 hr test


diabetes runs in my family and from my first dr appt, my obgyn told me she’d be doing more tests on diabetes than usual and sooner than usual. So when I went in for my 10 week appt, I had the 1 hr glucose test done. I got a call today (Im 13 weeks) from my dr requesting a 3 hr test tomorrow. Should I be concerned?? Is baby in danger when I eat sweets? How does it affect pregnancy?