When the gallows trapdoor opened and Thompson fell, the sudden impact of the noose caused her to suffer a massive vaginal haemorrhage. The large amount of blood spilled, combined with the fact that Thompson had gained weight during her imprisonment even while resisting food, led to conjecture that she might have been pregnant, although no post-mortem examination was made. All women hanged in Britain after Thompson were required to wear a special garment made of canvas as a precaution against the problems encountered with Thompson.