I'm so scared..

So I did my glucose test today. I'm 25 weeks pregnant. I was informed that my blood sugar is dangerously low. I was referred to a cardiologist about a week ago for some strange heart palpitations. My doctor has come to the conclusion that the two things are somehow related. My father has a heart condition that has required two open heart surgeries before age 50. That condition is hereditary. I'm so stressed out right now. I didn't want to put this on facebook so I thought here would be the perfect place. I really need some words of encouragement or something. I don't know what's going on. I'm scared and just want to cry.