Miscarriage

Can you have a chemical pregnancy and have a miscarriage without getting a bfp? I was 3 days late and took a digital test cause thats all i had. My hgc has always been lower with previous pregnancies and would be a vvvfl the day of my missed period. Any ways i tested on day 3 got a negative and started my period early the next morning. My period has seemed normal until today,day 3. My bleeding has been very heavy and i passed a clot that was about the size of a one dollar coin. When i looked closer it looked structured i guess, like it was all connected and not random peices. We arent ttc im just curious if i could have had a chemical pregnancy or if it was just an abnormal period.