What Does Heavy Periods With Pregnancy Symptoms Suggest?

ok so for two weeks i was having preg symptoms then i got my period five days late according to a 28 day cycle then there was barely nothing there it was a oragey red brown color for about a day in half then the next day same thing next thing you know still feeling preg i was bleeding very heavy like but blackish dark red color it then went to a water red for only a moment and stood in a puddle of blood i ave never done this before im not swollen and retaining water like normal eiter but my stomache seems to be getting bigger and heavy i have had all the symptoms of preg whats going on im so confused