I'm 22 years old and recently suffered my first miscarriage. I went to the emergency room for food poisoning and was told my heart rate was 140. After receiving 3 liters of fluid, my heart rate would not decrease and an ultrasound revealed an underdeveloped embryo. A week later, another US detected no fetal heartbeat and I had a D&C. I was never told what caused the tachycardia. My question is, are the three (tachycardia, dehydration and miscarriage) somehow related?

Summarized question: Are tachycardia, dehydration and miscarriage related?