Brief Answer: Please find detailed answer below Detailed Answer: Hi, Thanks for writing in to us. I have read through your query in detail. You have rightly said that sub chorionic hematomas usually resolves by itself in most patients. Theprogesterone levels in pregnancy vary with age of foetus and follow a particular pattern on monitoring. As you have not mentioned about the exact age of pregnancy in weeks, Im unable to giv you the level of progesterone appropriate for the pregnancy. During 8 to 10 weeks of pregnancy, progesterone levels must bein the range of 25.9 to 30.0 in normal pregnancy. However, progesterone levels decreasing from 27 to 18.5 requires supplementation. Your doctor is taking precautionary measures for a healthy and normal pregnancy. Progesterone guideline specify that when progesterone supplementation is given to a mother, its half life in the blood is very short. In four minutes it begins to be excreted rapidly into the urine. The most efficient route to take the progesterone to insure the best blood levels and the longest survival of the progesterone in the blood is to use vaginal suppositories. The next best route of administration is to take injections of progesterone. The least effective is to take the progesterone by mouth. Your doctor will take an approriate decision on progesterone treatment for your daughter. Please take the medication under medical supervision. Hope your query is answered. Do write back in you have any doubts. Regards, Dr.Vivek

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