Strange question

Okay yall so my period was due 3/13 and normally last 3 full days. I started on 3/10 and bled lightly for a day and a half and by the night of the 11th i wasnt bleeding anymore and the whole time i had 0 pms symptoms. Which normally i have back ache and cramping leading up to af. Could that have been implantation i just dont wanna waste money on a test if i dont need to.