Anxious/Nervous 1 1/2 days away!

Nikki
So I'm having my second baby Friday via c-section. I already had a c-section with my first but for some reason I'm getting really anxious and nervous. At 17 weeks pregnant with my daughter they found out she had an EIF on her heart which was a low indicator of Down syndrome although the doctor stated they didn't see any need to further test because she didn't have any other factors I have to wonder if what if she is born with DS. Also, I developed gestational diabetes during second trimester with her and did my very best at dieting and controlling my sugar but I'm still worrying about her sugar at birth. I'm just really praying she's normal and healthy. It's been a difficult pregnancy and I'm just praying all turns out okay.