Implantation bleeding

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I recently had sex a week ago on Wednesday and I took a plan b (take action) on Friday because he ejaculated in me and today (February 26th) I seen this while I was wiping... then I had sex again 2 days ago and he ejaculated in me. I already had my period on the 13th as well. I wanted to know you guys opinion. Do you believe this could be implantation bleeding. Please help me out you guys. Much love.