Blood clots in uterus

At 12 weeks and 6 days I started to bleed heavily but no pain.  I had to rush to the hospital because the amount of blood I lost was abnormal.  After having been checked by 2 doctors and after having 4 ultrasounds we found out that I have blood clots on the wall of my uterus.  We heard the baby's heart beat and everything was ok.  The only problem was that the blood clots were taking up 50% of space on the uterus.  They told me that I haven't done anything to cause this and that it is mother nature.  Things like this can happen.  So they told me that I have to be a couch potato.  No straining, no abrupt movements, no lifting.  I had to go back 2 weeks later for another ultrasound.  The blood clots are down to 10%.  They were very happy.  I am still bleeding but it is brown.  They told me that that is old blood.  My doctor even said that I might bleed throughout my entire pregnancy.  Now I am 15 weeks and 6 days and I am still on bed rest.  I have to go for ultrasouns every 2 weeks.

Anyone else in the same situation?