Help please.

So I’m due to ovulate tomorrow due to this app, and it’s always been accurate for me. Well Wednesday night my husband and I did the do and last night I had ewcm with alittle pink in it. Well today I’m having dark red/ old mucusy blood only when wiping and my discharge is heavy. No cramping nothing could I be about to start my period again? Or could it be something else. We have did the do pretty much every other night since I ended my period last month.