I started spotting dark red blood yesterday morning that has continued to today with no cramping. I went into the ER today thinking that I am 4 to 5 weeks pregnant. My hcg was only 15.. Ultrasound was inconclusive. My first day of my last period was on July 12. I'm hoping that I am just earlier than I thought, and that's why my hcg is low. I go in tomorrow afternoon to do a repeat hcg to see if it is going up or down. My fingers are crossed that it goes up!!! This is my first.