Implantation or menstruation

Last mens ko po is july 26-30 then may nangyari samin aug 2. Ang expected ko na next mens ko si aug 28 pa (which is today) pero nagkaron ako ng spotting nung aug 15-17 kung regla naman masyado namang maaga nalilito ako. Baka may same case sakin? Thankyouu.#advicepls