I just went to the doctor today because of that!

For me it started as spotting then filled a panty liner I was so scared I went to the hospital and found out I had a blood clot between my uterus and placenta they said it was very little and that the bleeding will continue until the clot is out, they said if it's dark red that it's because it's old blood and coming from the blood clot and that if i notice it turn bright red to be concerned and go back to the hospital, it never did but the bleeding went on for about a month but off and on I bled like twice a week and filled at least two panty liners in that day I'm now 17 and a half weeks and haven't bled since I was about 12 weeks.