PCOS and trying to conceive

So the first picture was taken last night and the 2nd picture was taken on Sunday . Was just only the one times when I wiped. No bleeding today or anything when I wipe.. My last cycle my period lasted 12 days . I’m now about 6 days late for my period . Have taken a pregnancy test 2 days ago and came up negative... what’s your opinions? My nipples are also a bit tender every now and then aswel .