I seen my Dr for my 14 week check up and he said my placenta is low. He didn't seem too alarmed just said it is probably because of lack of space because of all the weight I lost before I got pregnant. However I don't hear skinny girls saying they have low placentas. Is it something I should be worried about? I had a subchorionic hemorrhage at 9 weeks with my first son but I have not had any bleeding or any sign of hemorrhage with this one.