Pregnant ?

Mimi

So my period ended around the 7th & ovulation week started on the 13th this month according to the app but I started to spot on the 18th and it lasted about 3-4 days. It was very light being and it was dark. Could that mean I ovulated sooner than I thought and experienced implantation bleeding ??? Also my period that started the 3rd -7th didn’t seem normal to me. I didn’t cramp at all (with I always do) & I also didn’t clot (which I always have) and it was fairly light compared to my normal cycle