Could this be implantation bleeding? PLEASE HELP!!

Hello, can someone please help me figure this out!!

I’m 19 days late on my period according to the “period calendar” app (although I’m very irregular) And 14 days late according to this app. Guiding myself through the “PC app” I took a pregnancy test 11 days after missing my period, and it came out negative. It was one of those “6 days earlier test”. (I’ll upload the picture) My concerns are that today in the afternoon, after I peed and wiped, I saw this on my discharge. It seemed like a light pink blood, very strange that hasn’t happened ever. I’ve continued to go to the bathroom as normal and I haven’t had that since then. Do you guys think it could be implantation bleeding? I’m very concerned. I’m planning to take the test again soon, just in case. I’m not looking to conceive right now, I’m starting with this and have little knowledge about these things.

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