So today I decided to have a soda (cherry Pepsi)  for the first time since I've been pregnant (4 months) and I was fine I when I drank it. But suddenly my stomach is so tight and any movement hurts me. I have horrible heartburn I cannot get rid of. I've had it for 3 hours now. And I'm cramping in my stomach. I am seriously feeling like I'm dying. I've tried drinking water and laying down but nothing. Did that soda do all of this? Should I call my doctor?