What is happening to me?

Julia

So on Saturday I started to notice that my discharge was wierd. A little on the bloody side. I didn't think much of it cause my period is around the corner and I just thought it was starting. Within the past 3 days it's gotten a little worse... and I'm getting concerned. I'm not sure if I'm spotting or anything but it's a dark red/ brownish colour. I've never had this happen to me and it's making me concerned. Do you guys know what it might be?