Period or late implantation?

Ashley

I am currently 4 days late. Got pink spotting the day of expected period. Then brown the next day. Nothing the 3rd day and today pink spotting. All spotting is only when I wipe or check my cervix. Normally I’m not late. I have 32 day cycles. My last period started on July 26th and according to the app I ovulated on the 9th. Is this implantation maybe? Took a test this morning and it was negative.