Spotting ?

Yari ❤ • TTC For Baby #2 Have A Beautiful Lil Boy Hoping For a Beautiful Lil Girl(:
How do you know if your just spotting or it's your period ? Kuz I thought I was spotting but it was for 6 days so I put it down as my period ( How usually Long my period takes) . But Now I am spotting again ! This is so frustrating . Help!!