positive pregnancy test after normal 4 day period?

nicole

hi can anyone help me out with this or anyone who has had something similar, i’m so confused? i logged my normal 4 day period December 19-22 my ovulation window is supposed to take place December 28-January 3 but i felt just something off and took a test December 30th and got a very very fast digital positive pregnancy test? i’m so confused does anyone know what this could mean i am unfortunately thinking it is a chemical pregnancy.