HELP?

Idachia

Sooo , I start my period on 2nd of August . I ovulated a day early on 16th . I spotted on 23, 28-1, now nothing I have irregular periods so I don’t know my cycle that well but I never come on twice in a month . This time the blood was light it was pinkish -red, then brown but back to bright red . Is it implantation bleeding or something else going on ?