i did a pregnancy test early and there was a very clear horizontal line and a very faint veritical line so i thought i would wait a few more days then do another one. but whilst walking my dog a squirel ran past and my dog ran forward dragging me with him unable to keep up i fell down really hard on my bum/back, (it shock my bones) within a couple of minutes i felt my my period start went i got home i had started my period, but now it is clotty and im in a lot of pain.