What started out as a light brown tinted discharge has now gone dark brown...with what i thought was period cramps...glow predicted my period would start 3 days ago which is when this started...but day 3 and no flow just this discharge that does not fill up a tampon or pantyliner...any ladies experience anything like this?any idea what it could be?I've never had a light period before...if that's what it is...help!?