Hi, I fell in the doorway Sunday, even though it was very tender, I did not show a bruise until Wednesday night. Now it is a good size, dark purple, with lines all in it. I have noticed in the past, I seem to take a bit to show a bruise, by the time I see it, I do not know were it came from. Is this something I should tell my Dr. or is it just me? I do not know if this has anything to do with it but my BP runs low.