2 day period

Hi ladies, so I started my period 3 days early. Today is supposed to be day 3 and there is nothing. My period is always 5/6 days long so this is weird. Anyone else experience something like this. Day 1 was medium mostly brown/maroon and day 2 heavy bright red with a couple of clots. Day 3 nothing. I dont think i am pregnant just worried there's something wrong or that it will effect ovulation.