Pregnancy Concerns: Peri-Gestational Hematoma & Recurrent Miscarriage - Seeking Medical Advice

Question
Dear doctor Rappaport,
I am almost thirty five and have a daughter who is five. I am almost twelve weeks pregnant- my LMP was on the 8th June, 2005.
In between this pregnancy and my daughter I have suffered two miscarriages. One at eightweeks after many weeks of spotting. Just before I miscarried I was daignosed (by ultrasound) as having a large peri-gestational hematoma. The second miscarriage happened at six weeks. I was then placed on progesterone to control my heavy periods and in a hope to assist me in carrying a baby to term.
With my current pregnancy I have experienced light brown spotting on and of for the entire duration. However each ultra sound could find a well grown baby with a strong heartbeat. At eleven weeks the spotting became watery brown and a lot more profuse. My obstetrician did a scan and said that I had a "hole" in my placenta where it had lifted up. she said that there really wasn't a name for it and that it will resolve itself. She didn't give me a size but it looked quite small.
I would assume that this is a sub-chorionic bleed? If so can I expect it to heal quickly or not? will the brown spotting develop into heavy red bledding?
I am currently on 200mg of progesterone. I am extremely anxious as I am so frightened that I will miscarry.
I would also like to point out that after 12 hours of an induced labour with my daughter I had an emerg. c-section due to fetal distress and it was revealed that there was blood behind the placenta. I have had all of the required test to see if I have lupus or APS but they were negative.
Thankyou so much for you time,
Leigh  

Answer
You may have a "subchorionic bleed or hematoma" or you may have a small area of "placental abruption". At this stage of pregnancy, either should heal over and the blood or hematoma should dissipate. As long as the baby has a strong heartbeat and has adequate growth (on serial sonograms) you need not worry. The risk of miscarriage is still 15-20% in every pregnancy. You can't do anything to cause a miscarriage and you can't do anything to prevent a miscarriage. The progesterone supplementation may help avoid miscarriage, but should be stopped at 11-12 weeks gestation (which is now). There is no reason to suspect that you will again need a cesarean section. Each labor is unique. Good Luck on the remainder of your pregnancy.