ok, so i have had now for the last 3 days technically a 'period' but its 2 weeks early...also its really dark, id pretty much say brown/black...should i be concerned? also there are quite a few lumps...im not sure whether its anything to worry about ive had spotting in between periods before but they have been really light and practically 'seethrough' in colour, im also on the pill, ive even had a situation where i have missed a period due to stress...could this just be stress?