What about bleeding???

So now that the high has come down a little, (not much I grant you), I'm starting to get slightly worried about the bleeding episode I had on Tuesday. It was only during one bathroom break, but it was heavy, bright fresh red blood. If I had been expecting AF I would have sworn it was her, but it was gone as quick as it came! This morning however - I passed a medium size black to brown sticky clot. Is this leftover blood from Tuesday? Or is it something more? This mornings internet cheapie is still no darker than all the ones from earlier this week and I suppose I will just have to wait and be patient to find out what my beta is tomorrow...I hate waiting.