longer than 7 days period pp

i started my period right before i was 6 weeks pp, i spotted the first 2 days and then it was pretty heavy for 3 days but i didn't have cramping and then light the 6th & 7th day but it's now on the 9th day i'm still having some slight spotting. is that normal? i got my 6 week pp check up on my 8th day and she said everything looks good and i healed perfectly but idk why i'm still spotting