I had this and it was a chemical unfortunately. I would take a few days off work just to get over the worst of the bleeding and get your head around the emotional side.
There is of course a chance everything is ok, so I don't want to sound horrible and pessimistic when we don't know exactly what's going on but that early on I think it's less likely to be ok.
I wouldn't set much store by the clear blue digitals tbh. With dd1 I had 2-3 weeks at 14dpo and with dd2 I didn't get 2-3 weeks til I was over 5 weeks.
Have you done a regular test where it shows a line? If so I would use the same test and see if the line is any darker or whether it's getting fainter. When I had a chemical my lines got fainter.
So sorry, it's an awful thing to happen. I had two - one at 5 weeks and one at 7.5 weeks. I went on to have two beautiful girls though xx