Implantation Blood or Plan B side effects??

So I just had my period on Dec 28, on Jan 5th we had multiple sessions and he pulled out. The next night Jan 6 he bought a plan B and I took it,( but we also did it like Jan 8 I can’t remember) A week later Jan 12 I stared noticing reddish clear discharge, then I started spotting & for the past 3 days I’ve been putting tampons in & there’s been a literal drip & it’s been like a constant light flow now??? I’m always regular I never spot.Usually my cycles are pretty long like this past one was 34 days, my calendar says I don’t ovulate until the 17th, so I’m confused if this is implantation or just plan b side effects? (I’ve taken plan b before and I’ve never spotted)

Im not due for my period until another two weeks! HELP

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