UPDATE!*Light brown blood when wiping AF OR IMPLANTATION?

I have the normal 28-29 day cycle. July was my first period in a year since being on the depo shot. I'm 13dpo with all major symptoms of pms. I know implantation can occur between six and 12 DPO. I guess that's why some women mistake it as a light/short period. I wore a pad just incase and still just very light brown. Last month was super heavy all but the 6th day assuming bcuz it was my first menstruation in 13 months. Any experienced knowledge will be appreciated 🙂

Oh and i have tested as early as yesterday but got a vvfl - the inverted pic u could see the orange faint line

Update*Just took this and showed up after 2 mins and less than 5 mins wiped again and smaller amounts of brownish blood