question: Hi I am 33 years old pregnant 6 weeks ago.yesterday I was ar doctor clinic and everything was great I also heard the heartbeats of the baby.i am an A negative blood type.today in the morning I started bleeding red its like the first day of the period and even blood is somehow not much liquid.i have no pain anywhere.doctor asked me to make prolaton depot 500 mg as injectioncould it be im loosing my baby? Or is it bcoz of my blood type???? Pls answer