Implantation bleeding

I’m due to expect my period next week according to my tracking app it’s roughly Wednesday coming. Last night at 9.30pm went to the toilet and when I wiped there was pink very light blood on the tissue? I’ve took two pregnancy test and both are negative. Had a pad on and no blood on it either? My mood swings are all over the place, cramping now and my partner and I we had sex yesterday then afterwards was the little pinkish bleeding. Anyone else had this?

Today no pinkish when wiping and nothing on the pad

Period not due, light pinkish bleeding when wiping and neg tests?