Nervous as hell

3 days before I found out I was pregnant I was in the er for chest pain and they did a blood pregnancy test. It came back negative so they proceeded with the X-ray. They did 2 quick x rays of my chest and I had a shield on in the back. 3 days later I tested positive at home on 5 different pregnancy tests as positive. Since then I have had cramps almost period like just a little less intense. I’ve had no bleeding and AF was supposed to show up on Wednesday. My insurance does not kick in till the 4th. Has anyone had this before?