IB or AF???

Natalie

So on 10/13 I began to get mild cramps which wasn’t normal bc I wasn’t due for AF until 10/19. I had mild cramps on and off for 2/3 days. Then yesterday 10/16 I spotted about the size of a quarter. Also when I wipe there were VERY TINY blood clots (I know ppl say if it’s clots it’s not IB but it’s actually quite common) I’m never early, maybe a day or two late but AF never comes early. Since AF came yesterday my flow hasn’t been how it normally is. Not heavy at all, rather on the mild side. Which isn’t normal for the 2nd day of my period. Btw I’m still cramping mildly. So could this be IB or just an early period???