I'm in my eighth month of pregnancy. Eight days ago, I had an acute pain briefly in my lower abdomen while trying to get out of bed in the morning. I sat still until it subsided and went about my day. I assumed I had pulled a ligament, so I wasn't worried. At bedtime I noticed I had bled recently and more than just a small spot, but bleeding was finished by then. Nothing happened overnight. The next day a brownish discharge started and has continued for the past 7 days. My doctor did a pelvic exam at the 3 day point and said my cervix was open about a finger width, but attributed the bleeding and discharge to intercourse. After the appt I remembered I had not had intercourse for several days prior to bleeding. At my exam baby's heartbeat was normal and I've been feeling movement throughout, but this is my 4th pregnancy and I've never had any spotting or brown discharge before. Should I be concerned?