Omg ladies! TMI pic!! How do you confirm?

How do you confirm a chemical pregnancy?? I just knew something was off. I literally had every pregnancy symptom and I wasnteven actively    trying so i know I wasnt searching for the signs that were there. And then my period came 4 days early and I have been cramping so bad and I never cramp I just get a strange pressure. So I changed my super plus Tampon at 12:30 and then at 1:40 i felt my whole panties and thighs wet. I rush to the bathroom and its blood everywhere and then this comes out .. Am I over analyzing this?? Or is this what I think? How can I confirm