I had read in some article that during abortion/miscarriage as the embryo comes out from body, at the same time some blood can also enter in to tube and can cause blockage by blood clotting. The chances of this is very very low, still If this really happen then the blockage due to this blood clots removed from fallopian tube by laparoscopy? Is this a serous blockage ? Or this blood clot blockage is minor one and can be cured easily?